Archive for the Shade Perennials Category

« Older Entries
Newer Entries »

More Flowering Wintergreen Ground Covers for Shade

Posted in evergreen, Fall, groundcover, Shade Perennials, winter interest with tags , , , , , , , , , , , , on October 27, 2011 by Carolyn @ Carolyns Shade Gardens

Carolyn’s Shade Gardens is a retail nursery located in Bryn Mawr, PA, specializing in showy, colorful, and unusual plants for shade.  The only plants that we ship are snowdrops within the US.  For catalogues and announcements of local events, please send your full name, mailing address, and cell number to carolyn@carolynsshadegardens.com and indicate whether you are interested in snowdrops, hellebores, and/or hostas.  Click here to get to the home page of our website for catalogues and information about our nursery and to subscribe to our blog.

‘Album’ fall blooming hardy cyclamen, C. hederifolium ‘Album’, has white flowers, shown here blooming before the leaves on September 28, 2011, and spreads to form a ground cover that stays green through the winter.

In my article Flowering Wintergreen Ground Covers for Shade, I explained that I treasure evergreen ground covers that are presentable through winter because, here in the mid-Atlantic (US), we go through long periods of winter weather that are just plain cold without the compensation or covering of snow when any patch of green is prized.  Ground covers, especially those that maintain a presence through winter, make a garden look mature and cut down on the labor of weeding and the expense of mulch. Yes, you can plant the evergreen  triumvirate of vinca, ivy, and pachysandra.  But I want more: beautiful flowers and foliage too.  Just like the four in my original article, all four of the shady ground covers described below have prominent places at Carolyn’s Shade Gardens.

‘Shell Pink’ spotted dead nettle (I prefer to call it lamium), Lamium maculatum ‘Shell Pink’, still blooming at the end of November 2010.

Lamium ‘Shell Pink’ is a versatile wintergreen ground cover with gorgeous flowers from April to November.  It is the only lamium cultivar that blooms this long–all the others have a season of bloom in the spring.  I grow mine under the shade of a white pine (photo above and below) and also in a sunny area in front of my peonies.  ‘Shell Pink’s’ leaves stay neat and tidy all winter.

The first flush of blooms on ‘Shell Pink’ lamium in early April 2011.

Lamium maculatum is native to Europe and temperate Asia.  It quickly creeps to form 4 to 8″ tall patches of wintergreen leaves even in open full shade in zones 3 to 8.  It doesn’t seem to care if the soil is moist or dry but likes to be well-drained.  On ‘Shell Pink’, the first flush of flower buds emerges in early April to be followed by successive waves of blooms into November.  It fills in around surrounding plants without overwhelming them.  My deer have never touched it.  Lamium also makes a great container plant and overwinters outside in pots.  The only other cultivar I recommend is ‘Purple Dragon’ with bright purple flowers and solid silver leaves (photo below).

Although ‘Purple Dragon’ lamium only blooms in the spring, it’s silver leaves are quite ornamental in their own right.  Photo December 2010.

In anticipation of comments telling me that lamium is “invasive”, let me say three things.  First, it is a ground cover so it is supposed to spread and cover large areas.  A plant isn’t invasive because it spreads too much—the gardener has just planted it in the wrong place.  To me, it’s invasive if you can’t remove it when you want to either because you can never get it all (goutweed, lesser celandine) or it seeds so prolifically that you can’t remove all the seedlings (garlic mustard).  Second, the straight species, Lamium maculatum, may be invasive so don’t plant it.  Third, many times when gardeners say this they are talking about yellow archangel, Lamiastrum galeobdolon, a plant with yellow flowers and silver leaves that is invasive.  Lamiums don’t have yellow flowers.  Thanks for listening!

Fall-blooming hardy cyclamen, C. hederifolium, in full bloom in late October 2010.

Although spring-blooming hardy cyclamen, C. coum, is finicky and hard to grow, fall-blooming hardy cyclamen will thrive in most shady locations as long as it is well-drained.  The flowers start to bloom in September and October before the leaves break dormancy.  Then its gorgeous, intricately patterned wintergreen leaves emerge and remain pristine all winter until they go dormant in early summer.  Mine happily naturalize in east-facing shady locations.

Cyclamen hederifoliumImagine large patches of this fall-blooming hardy cyclamen foliage all through winter–absolutely stunning!  Photo in late November 2010.

Hardy cyclamen is native to wooded areas and rocky hillsides of southern Europe and Turkey.  It forms 4 to 6″ tall mats of leaves, which remain highly ornamental through winter in zones 5 to 9.  It is very tolerant of soil conditions as long as it is well-drained and, once established,  grows well in full dry shade.  My deer leave it alone.

 

‘Pictum’ Italian arum, Arum italicum ‘Pictum’, used as a ground cover around hellebores and hostas along my front walk so I can admire it all winter.  Photo October 20, 2011.

 

This is what happens to Italian arum during really cold weather.  No matter how many times I have witnessed it, I am always amazed when it stands back up and looks as if nothing has happened.  Photo December 2010.

I have featured Italian arum photos on my blog many times but that’s because I think it is such a great plant.  The leaves emerge in September and remain immaculate through the winter.  If the weather is really cold, it wilts to the ground (see photo above), only to perk up again as soon as temperatures recover.  I have it planted by my front walk so I can enjoy its spotless, highly ornamental leaves all winter.  I also use it to cover areas where I cut back ratty hostas in the fall (see my article Hostas for Fall).  In May and June, it blooms with a pale green hood-like spathe covering a yellow spadix like our native jack-in-the-pulpit.  Bright orange berries appear in summer.  Several wonderful cultivars are available, including ‘Gold Rush’, which emerges in the spring with golden venation, and ‘Tiny Tot’, a miniature.

‘Gold Rush’ Italian arum in November 2010.  Italian arum cultivars have superior markings.

Arum italicum 'Tiny Tot'/'Tiny Tot' Italian Arum‘Tiny Tot’ Italian arum in February of 2009.

Italian arum is native to Europe.  It grows 12 to 18″ tall in zones 6 to 9.  It thrives in any soil in almost full sun to full shade and is tolerant of drought.  Deer do not bother it.  In the 20 years that I have been growing it, it has spread politely to other areas of my garden, but occasionally I have heard that it can become an aggressive spreader.  Lyn from The Amateur Weeder reports that it is invasive in Australia.  Please consult local experts to see if there is a problem where you garden.

 

‘Sulphureum’ epimedium, E. x versicolor ‘Sulphureum’, used as a ground cover in front of hardy begonia, B. grandis.  Photo October 20, 2011.

I love epimediums.  In fact, I love them so much that they are one of the few plants I allow myself to collect with 30 varieties in my garden.  Their small but copious spring flowers are beautiful and unusual coming in white, pink, yellow, orange, red,  purple, and bicolors.  I also prize their leaves which are often shiny and wing-shaped, sporting spiky edges or colored splotches or lovely venation.  Many epimediums are deciduous and clump-forming.  In this article, I want to profile a few that have wintergreen leaves and spread to make a ground cover.

The fastest growing epimedium by far is ‘Sulphureum’.  It spreads at a medium rate to form a large patch (see photo above).  Its two-tone yellow flowers  look like miniature daffodils in early April.

E. x rubrum is the second fastest spreader.  It’s leaves are similar to ‘Sulphureum’.  If you can find the cultivar ‘Sweetheart’, pictured above, it has gorgeous flowers.  I sell a good selection of epimediums at my nursery, but I get my unusual epimediums from the Massachusetts nursery, Garden Vision Epimediums (email epimediums@earthlink.net).  They have hundreds of varieties.

‘Frohnleiten’ epimedium, E. x perralchicum ‘Frohnleiten’, is also a fairly quick spreader .  It has gorgeous shiny leaves with an intricate vein pattern and produces bright, sulfur yellow flowers in the spring.

‘Shrimp Girl’ epimedium, E. alpinum ‘Shrimp Girl’, is also a good spreader in my garden, here used as a ground cover in front of ferns and hostas.

The lovely two-tone flowers of ‘Shrimp Girl’ in spring.

 

I am including ‘Kaguyahime’ epimedium even though it spreads fairly slowly so that you can see how beautiful and unusual the leaves of wintergreen epimediums can be.

Epimediums are native to Europe, Asia, and North Africa.  They reach 6 to 12″ tall, depending on the cultivar, and flower in April.  They grow in part to full shade and can take dry soil once established.  Their creeping roots are impenetrable to weeds.  I cut back all the remaining old foliage in March once I see the new flowers and leaves starting to emerge.  When choosing an epimedium for ground cover, select spreading varieties that have evergreen or semi-evergreen leaves.

 

Next spring when you are looking for ground covers, I hope you will consider one of the four described above.  In the meantime, leave a comment with the name of your favorite wintergreen ground cover for shade.  In my first article, I profiled golden groundsel, creeping phlox, dwarf sweetbox, and hybrid hellebores as ground covers.  If you want to read about them, click here.

Carolyn

Notes: Every word that appears in orange on my blog is a link that you can click for more information.  If you want to return to my blog’s homepage to access the sidebar information (catalogues, previous articles, etc.) or to subscribe to my blog, just click here. 

47 Comments »

October GBBD: A Few Fall Favorites for Flowers

Posted in Fall, Fall Color, Garden Blogger's Bloom Day, landscape design, native plants, Shade Gardening, Shade Perennials with tags , , , , , , , , , , , , , , on October 10, 2011 by Carolyn @ Carolyns Shade Gardens

Carolyn’s Shade Gardens is a retail nursery located in Bryn Mawr, PA, specializing in showy, colorful, and unusual plants for shade.  The only plants that we ship are snowdrops within the US.  For catalogues and announcements of local events, please send your full name, mailing address, and cell number to carolyn@carolynsshadegardens.com and indicate whether you are interested in snowdrops, hellebores, and/or hostas.  Click here to get to the home page of our website for catalogues and information about our nursery and to subscribe to our blog.

The subtle coloring of ‘White Towers’ toad-lily, Tricyrtis latifolia ‘White Towers’, is magical in the fall.  Every photo was taken at Carolyn’s Shade Gardens this fall.

I am linking this post to Garden Blogger’s Bloom Day for October when gardeners around the world show photos of what’s blooming in their gardens (follow the link to see  photographs from other garden bloggers assembled by Carol at May Dreams Gardens).  I am also linking to Gesine’s Bloom Day at Seepferds Garten.  I am located in Bryn Mawr (outside Philadelphia), Pennsylvania, U.S., and zone 6b.

In my last post, A Few Fall Favorites for Foliage and Fruit,  I explained that, inspired by an article about dressing up your fall garden with mums because everything else is finished, I grabbed my camera and headed outside to prove them wrong.  There was so much going on that I divided the plants into three posts: foliage and fruit, flowers, and hostas for fall.  This is part two highlighting flowers.  So here are some of the flowers dressing up my shady gardens right now:

Japanese anemones, Anemone x hybrida, are one of the undisputed stars of my fall garden, growing anywhere from full sun to almost full shade and thriving no matter what the weather.  Clockwise from upper left: ‘Honorine Joubert’, ‘Margarete’, ‘Whirlwind’, ‘Bodnant Burgundy’, ‘September Charm’.

The black plumes of ‘Moudry’ fountain grass, Pennisetum alopecuroides ‘Moudry’, glow in the low-angled fall light.  ‘Moudry’ does well in the shade, flowering later and remaining more compact.

I grow about five different varieties of native golden rod, Solidago,  with my current favorite ‘Little Lemon’, growing only 12 to 18″ high.  Contrary to popular belief, goldenrod does not cause allergies as it is pollinated by insects.  Wind pollinated ragweed, which blooms at the same time, is the culprit.

Toad-lilies, Tricyrtis, bloom throughout the fall in full shade with ‘Sinonome’ just getting started now and continuing into November.  Clockwise from upper left: ‘Sinonome’, ‘White Towers’, ‘Miyazaki’, ‘Empress’.

Another plant that is just warming up is Pennsylvania native northern sea oats, Chasmanthium latifolium.  Its foliage will turn orange later in the fall and then dry to a beautiful khaki for the winter.  Be forewarned, however, when this plant reaches critical mass, it starts spreading, and its wiry roots are very difficult to remove.  Give it room and then triple the space you think you need.

Autumn leadwort, Ceratostigma plumbaginoides, is one of my favorite groundcovers.  Its true blue flowers start blooming in June and continue through October when its leaves turn bright red.

Pennsylvania native ‘Bluebird’ smooth aster, A. laevis ‘Bluebird’, seeds all around my garden in full sun to part shade.  Butterflies and bees love it.  Please click here to find out why most native cultivars are just as friendly to native fauna as the species.

‘Zebrina’ hollyhock mallow, Malva sylvestris ‘Zebrina’, seems to move around my garden at will, but it never fails to steal the show with its 3 to 4′ stalks loaded with showy flowers.  It grows best in full to part sun.

Fall-blooming hardy cyclamen, Cyclamen hederifolium, is one of the plants I would take to my shady “desert island”.  Right now its pink or white flowers are floating all around my shady gardens.  Later its evergreen leaves will emerge from summer dormancy and look like the photo on the left all winter long.

I am always raving about the foliage of the coral bell cultivars derived from our Pennsylvania native Heuchera villosa.  Well this is the plant that started it all, Heuchera villosa ‘Autumn Bride’.  It has very large and attractive fuzzy green leaves and beautiful flowers that bloom right now–this is the only cultivar I would grow for its flowers (the rest I grow for the leaves).

The cultivar ‘Cory’ of Pennsylvania native hardy ageratum, Eupatorium coelestinum, is far superior to the straight species.  It has more abundant and showier flowers, ornamental purple stems, interesting crinkled leaves, and a much better upright habit.  ‘Cory’ is also a good spreader in sun to part shade so give it room.  Pictured above with another of my favorite Pennsylvania natives, wrinkleleaf goldenrod, Solidago rugosa ‘Fireworks’.

Hardy begonias, Begonia grandis, have spread all over my garden in full shade, and I have yet to find a place that I don’t want them.  Because they come up very late in May and really just get going in the fall, I use them to fill in between my hostas on my back hill.  

Pennsylvania native Joe Pye weed, Eupatorium dubium, reaches 10′ tall in my garden and flops over in our torrential rains.  The “dwarf” version called ‘Little Joe’ grows to a diminutive 5′ tall and has remained erect through the 30″ of rain we had in August and September to bloom now with its large purple flowers–a magnet for butterflies and bees.

In the spring, a gardener I very much admire brought over this plant, telling me it was a salvia with yellow flowers that grows in full shade and blooms in the fall.  I duly planted it in my shady “yellow garden” and it thrived through heat, drought, and rain with no attention.  It is called woodland sage, Salvia koyamae.

I am just beginning to learn about hydrangeas because until last year there was no point in planting them because of the deer.  One of my first acquisitions after the netting went up was ‘Limelight’, Hydrangea paniculata ‘Limelight’.  The large white flowers aging to pink have been blooming all summer in part shade, and there are still buds coming—very impressive.

If you want a multitude of fall flowers in dry, full shade, you can’t find a better plant than Pennsylvania native blue wood aster, Aster cordifolius.  It fills in all the difficult sites in my woodland and produces a glorious blue haze in the fall.

It is fitting that I should end with my favorite Pennsylvania native perennial for fall, garden phlox, Phlox paniculata.  I love everything about garden phlox: its heavenly fragrance, its long bloom time from early summer through fall, the wealth of colors available, its polite self-sowing, and its attraction to butterflies.  I dream of installing a meadow area and collecting dozens of plants of every phlox cultivar out there!

Of the 17 photos above, 8 picture plants that are native to Pennsylvania and eastern North America.  I believe that planting native plants is crucial to our survival.  Please take the time to read this short essay explaining why.  And Pennsylvania’s native plants really come into their own in the fall eliminating the need for dressing with mums!


Click to enlarge

Carolyn

To read Part 1, A Few Fall Favorites for Foliage and Fruit, click here.  Stay tuned for Part 3, Hostas for Fall.  In the interest of full disclosure, I must confess that sadistic botanists have recently changed the botanical names of many of the native plants that I highlighted to completely unpronounceable and unspellable but “botanically proper” names.  At this point, I refuse to follow.


Notes: Every word that appears in orange on my blog is a link that you can click for more information.  If you want to return to my blog’s homepage to access the sidebar information (catalogues, previous articles, etc.), just click here.

92 Comments »

The Weird and the Wonderful

Posted in garden to visit, Shade Perennials with tags , , , , on July 5, 2011 by Carolyn @ Carolyns Shade Gardens

Nursery News:  Carolyn’s Shade Gardens is a retail nursery located in Bryn Mawr, PA, specializing in showy, colorful, and unusual plants for shade.  The only plants that we ship are snowdrops within the US.  For catalogues and announcements of local events, please send your full name, mailing address, and cell number to carolyn@carolynsshadegardens.com and indicate whether you are interested in snowdrops, hellebores, and/or hostas.  Click here to get to the home page of our website for catalogues and information about our nursery and to subscribe to our blog.

.

The flowers of Farges’s cobra lily (Asian jack-in-the-pulpit), Arisaema fargesii, are spectacular.

Our recent trip to North Carolina for my son’s college graduation (see North Carolina and Duke Gardens) included a visit to Plant Delights Nursery just south of Raleigh.  Plant Delights is a mail order nursery started in 1988 and specializing in new and rare perennials, including many shade plants like jack-in-the-pulpits, wild ginger, mayapples, and toad-lilies.  The sales area is quite large and well laid out and, of course, purchases were made.  But the real reason I visited was to spend time in what Plant Delights calls the Juniper Level Botanic Gardens, a five acre display garden featuring the weird and wonderful plants they sell plus additional plants that are being trialed.

Golden variegated bush ivy, x Fatshedera lizei ‘Annemieke’, which I have never seen before, evidently resulted from a cross between a houseplant and ivy (not hardy in zone 6 unfortunately).

Michael and I spent over two hours in the shade section of the gardens (we never made it to the sunny side) admiring and photographing all the amazing plants displayed there.  I have to thank Michael who was by my side the whole time viewing (with suitable comments) every plant I pointed out and patiently recording the botanical name of every plant I photographed.  He even pointed out some of his own and never said don’t you think we should be going.  That’s dedication.

This lacecap hydrangea, H. serrata ‘Burgundy Edge’, was growing literally in the dark.

I love jack-in-the-pulpits, both native and Asian, and Plant Delights must have the best collection in the U.S.  Here are some of my favorites:

I didn’t realize that there were variegated forms of our native jack-in-the-pulpit, Arisaema triphyllum, but I saw two at Plant Delights: ‘Black Jack’ above and a white variegated cultivar called ‘Starburst’.

Taiwan cobra lily, Arisaema taiwanense

Jack-in-the-pulpit cross, Arisaema formosanum x consanguineum

Pinellia tripartita ‘Atropurpurea’

.

Arisaema thunbergii

Arisaema thunbergii ‘Wakayama’

Farges’s cobra lily, Arisaema fargesii, a close up of the flower appears at the beginning of the article.

The leaves of Japanese cobra lily, Arisaema ringens, are immense.

Here is Michael standing next to Arisaema ringens for scale.

I can’t imagine that Plant Delights’ collection of another of my favorites, mayapples, Podophyllum sp., can be surpassed:

Chinese mayapple, Podophyllum delavayi

Chinese mayapple, Podophyllum versipelle

I had never seen the flowers of Podophyllum ‘Spotty Dotty’.

Chinese mayapple, Podophyllum pleianthum

Chinese mayapple, Podophyllum difforme, looks like it should be growing on Mars.

Plant Delights also has a comprehensive collection of wild gingers:

I wish my ‘Galaxy’ wild ginger, Asarum takaoi ‘Galaxy’, would grow like this.

Asarum takaoi ‘Sekkyo’

Asarum kumageanum

The flower of Asarum nobilissimum

Asarum maximum ‘Shell Shocked’

I found a number of other weird and wonderful shade plants that I would like to add to my gardens:

Barrenwort, Epimedium fargesii

Toad-lily, Tricyrtis ‘Lunar Eclipse’

Very rare Paris species labeled “Wavy Leaf”

Native bloodroot, Sanguinaria canadensis “Deep Lobes”

Rosa ‘Verdun’ was covered with flowers in full shade.

Toad-lily, Tricyrtis ‘Lemon Twist’

I was finally able to purchase a shredded umbrella plant, Syneilesis aconitifolia, which I have been coveting for years!

If you are in the area, I highly recommend that you visit the Juniper Level Botanic Gardens.  Plant Delights is open eight weekends a year for garden visits.  Their website lists the dates.  If you can’t visit then, you can always make an appointment.

Carolyn

Notes: Click on any photo to enlarge.  Every word that appears in orange on my blog is a link that you can click for more information.  If you want to return to my blog’s homepage to access the sidebar information (catalogues, previous articles, etc.), just click here.

 

77 Comments »

Larger Hostas

Posted in container gardening, hosta, Shade Gardening, Shade Perennials with tags , , , , , , , , , , , , on May 30, 2011 by Carolyn @ Carolyns Shade Gardens

Carolyn’s Shade Gardens is a retail nursery located in Bryn Mawr, PA, specializing in showy, colorful, and unusual plants for shade.  The only plants that we ship are snowdrops and miniature hostas.  For catalogues and announcements of events, please send your full name, location, and phone number (for back up use only) to carolyn@carolynsshadegardens.com.  Click here to get to the home page of our website for catalogues and information about our nursery and to subscribe to our blog.

.

Hosta Teeny-weeny Bikini' at Carolyn's Shade GardensHosta ‘Teeny-weeny Bikini’: I couldn’t resist including one more miniature.

In my recent article Miniature (& Small) Hostas, I explained my evolving relationship with hostas and how my collecting tendencies had led me to miniature hostas for space reasons.  I display these little treasures in special ways in containers, in my rock garden, or as groundcover in order to highlight their small stature.  However, for specimen plants and variety of leaf color, there is nothing like a larger hosta.  They come in an an infinite number of combinations of colors, heights, widths, leaf shapes, flowers, and habits.  There is a medium to large hosta for every garden condition, both as the star of the show and a lovely backdrop for your other perennials and shrubs.  In this article, I want to highlight some of my favorite larger hostas as well as some cultivars that are new to me.

Mature Hosta tokudama ‘Flavocircinalis

Leaf of mature ‘Flavocircinalis’

Before I get to the plants, however, I want to explain something that took me a while to figure out.  Larger leaf hostas do not look like themselves in a nursery pot because they take one to two years to mature and reach their full size and coloration.  Immature plants will have different shaped leaves, usually pointed, and will not display the intricate color patterns that you can expect on the plant in your garden.   Compare the photos of Hosta tokudama ‘Flavocircinalis’ above and below. That is why at Carolyn’s Shade Gardens, I always encourage customers to look at the mature hostas in the display gardens before making their choices.

Immature plant of ‘Flavocircinalis’

Immature leaf of ‘Flavocircinalis’

Here is a taste of some of my favorite and best-selling larger hostas.  You can view well established specimens of these cultivars in my display gardens:

Hosta ‘June’ was the American Hosta Growers Association 2001 Hosta of the Year with good reason and is the most popular hosta with my customers.

The beautiful leaf coloration of ‘June’.

‘First Frost’ is the 2010 Hosta of the Year.

The leaves of ‘First Frost’ emerge with bright yellow leaf margins, which age to cream (in photo above) and set off its very blue center.

‘Great Expectaions’ is my second biggest selling hosta and has one of the most beautiful habits of any large hosta.

The elegant leaf coloration of ‘Great Expectations’.

‘Earth Angel’ is the 2009 Hosta of the Year and is as large and glorious as its parent ‘Blue Angel’ but with a cream margin.

‘Earth Angel’ is the first giant blue hosta with a contrasting border.  The leaves can reach 18″ x 12″ and a specimen can be 5′ wide.

Hosta tokudama is my favorite of all species hostas and ‘Aureonebulosa’ is my favorite cultivar of the many tokudama offspring.

The cupped and heavily puckered texture of  ‘Aureonebulosa’ is typical of the tokudama group.

‘Fragrant Bouquet’ is the 1998 Hosta of the Year and has fragrant flowers.

‘Fragrant Bouquet’s’ light green leaves really stand out in the shade, and it retains its yellow margins all season.

When I visit hosta collections and displays, some plants always stand out.  I look for these plants in the trade to add to my own gardens and offer to my customers.  Here are some of the cultivars I was able to add this year:

‘Touch of Class’ is a close relative of ‘June’ but with a wide blue border enclosing a central gold stripe.  It has an excellent habit and great slug resistance.

‘Liberty’ is the Hosta of the Year for 2012.  You can see both the yellow coloration of its new leaves and the wide cream margins of its older leaves in the photo above.  For a great shot of its coloration, see both the header and wordless Wednesday photo at Pat and Jim’s Gardening Adventure.

‘Paradigm’ is the 2007 Hosta of the Year.  For a much better photo of its leaves and habit, check out these photos of all the Hostas of the Year, by clicking here.  The American Hosta Growers Association has only picked 17 hostas to be Hosta of the Year out of an estimated 6,000 hosta cultivars in the trade so this accolade is quite a meaningful honor.

‘Fragrant Queen’ is a fragrant hosta boasting very substantial rounded leaves with wide white margins.

I have coveted ‘Brother Stefan’ every time I have seen it.  For a much better photo, showing its coloration, texture, and habit, click here.

Just a few ideas for using larger hostas in your garden:

Left to right: ‘Flavocircinalis’, the species H. tokudama, and ‘June’ massed in front of a Japanese holly.

Left to right: ‘Frances Williams’, ‘Abiqua Drinking Gourd’, ‘Kabitan’, and ‘Earth Angel’.

‘Great Expectations’ displayed as a specimen with other hostas, ferns, epimediums, violets, and hardy geraniums.

A specimen ‘Fragrant Bouquet’ with yellow waxbells, hardy gernaium, and ‘Luxuriant’ bleeding-heart.

A simple but elegant container planting at Duke Gardens in Durham, North Carolina.

A rare Hosta tokudama by itself in a container on my front porch.

Colorful foliage is a fun and essential part of the shade garden.  I hope I have introduced you to some new and intriguing larger hostas that you can add to your shade.

Carolyn

For two more articles on hostas, click here:

Miniature (& Small) Hostas

Hostas for Fall

Notes: Every word that appears in orange on my blog is a link that you can click for more information.  If you want to return to my blog’s homepage to access the sidebar information (catalogues, previous articles, etc.) or to subscribe to my blog, just click here. 

When I want information about hostas, I go to the Hosta Library and My Hosta Database to find photos and comprehensive written descriptions.  I have added both these sites to my sidebar under Plant Information so you will always be able to find them.

67 Comments »

April GBBD: How to Choose

Posted in bulbs for shade, Garden Blogger's Bloom Day, hellebores, native plants, Shade Perennials, Uncategorized with tags , , , , , , , , , , , on April 14, 2011 by Carolyn @ Carolyns Shade Gardens

Carolyn’s Shade Gardens is a retail nursery located in Bryn Mawr, PA, specializing in showy, colorful, and unusual plants for shade.  The only plants that we ship are snowdrops and miniature hostas.  For catalogues and announcements of events, please send your full name, location, and phone number (for back up use only) to carolyn@carolynsshadegardens.com.  Click here to get to the home page of our website for catalogues and information about our nursery and to subscribe to our blog.

Time is just flying by, and we have reached the middle of the month when I encourage each of you to walk around your garden and assess what you need to add to make early spring an exciting time in your landscape.  Do you need more early flowering trees like magnolias and cherries to give you a reason to stroll in your garden?  Could your garden benefit from flowers that bloom in early April like native spring ephemerals, bulbs, pulmonarias, and hellebores?

Make a list and take photographs so that when you are shopping this spring you know what you need and where it should go.  It’s beautiful outside, and you never know what you might find hiding in your garden like this ethereal double-flowered hellebore (pictured above), which I discovered during my own  inventory.  Usually I recommend a local garden to visit for inspiration, but I have to say Carolyn’s Shade Gardens is pretty inspiring right now!

Flowering quince, Chaenomeles x superba ‘Texas Scarlet’, with ‘White Lady’ hybrid hellebore

Today is Garden Blogger’s Bloom Day for April when gardeners around the world show photos of what’s blooming in their gardens (follow the link to see  photographs from other garden bloggers assembled by Carol at May Dreams Gardens).  Here are  some more highlights from my mid-April stroll through Carolyn’s Shade Gardens, but to see it all you will have to visit as Jean from Jean’s Garden and Jan from Thanks for Today are doing this Sunday.

My early magnolias are in full bloom.  Magnolias are my favorite flowering trees, and I want to share these early-blooming varieties with you:

Northern Japanese Magnolia, Magnolia kobus ‘Wada’s Memory’, has the most beautiful form of any magnolia.  The branches curve upwards to form an elongated pyramid, which is maintained even on mature plants.

‘Wada’s Memory’ flower

Star magnolia, Magnolia stellata, blooms so early that it often gets damaged by frost, but amazingly the flowers are magnificent this year.

Star magnolia flowers

I have waited over 15 years for my Yulan magnolia, Magnolia denudata, to bloom, but once I saw mature trees at Longwood Gardens, I had to have one!  It was worth the wait.

My ingenious 13-year-old son used a grappling hook to pull a branch down and clip a Yulan magnolia flower for me to photograph.

There are so many beautiful hellebores in bloom that I made collages of my favorite flowers so that this whole post wasn’t dedicated to hellebores:

Clockwise from upper left: seedling double hybrid hellebore, ‘Mrs. Betty Ranicar’, ‘Velvet Lips’ (don’t you love that name?), ‘Painted Bunting’

Clockwise from upper left: seedling petaloid hybrid hellebore, ‘Blue Lady’, Helleborus x nigercors ‘Green Corsican’ (cross between Corsican hellebore and Christmas rose), seedling in ‘Double Melody’ strain

Clockwise from upper left: double from ‘Golden Lotus’ seed strain, ‘Raspberry Mousse’, ‘Goldfinch’, seedling petaloid hybrid hellebore

I could dedicate the whole post to epimediums too so here are more collages:

Clockwise from upper left: ‘Yubae’, Epimedium x rubra, ‘Cherry Tart’, ‘Sweetheart’

Clockwise from upper left: ‘Shrimp Girl’, ‘Orange Queen’, Epimedium x warleyense, ‘Cupreum’

I have a collection of about 15 varieties of European wood anemones, and April is their time to shine.  They are very easy to grow in shaded woodland conditions:

Left to right from upper left: Anemone nemorosa pink form; Anemone x seemanii; ‘Alba Plena’; ‘Leed’s Variety’; ‘Bractiata’; ‘Allenii’; ‘Vestal’; Anemone ranunculoides; ‘Wyatt’s Pink’

European wood anemones spread to form a sizable and eye-catching patch even in dry shade, photo above of the yellow flowers of Anemone ranunculoides.

I want to share so many exciting blooming plants with you that I don’t know how to choose the photographs to include, hence the title of this post.  Here are other plants that made the cut:

Red lungwort, Pulmonaria rubra ‘Redstart’, is a very unusual pulmonaria with green fuzzy leaves.

Winterhazel, Corylopsis species, unfortunately for the first time ever our late freezes damaged most of the flowers.

Obviously not a bloom, but I wanted to show you the early color of native variegated dwarf Jacob’s ladder, Polemonium reptans ‘Stairway to Heaven’.

Native rue anemone, Anemonella thalictroides double pink form

I planted a mixture of daffodils in the middle of my raised beds, and this lovely seedling appeared in the path.

Native cinnamon fern, Osmunda cinnamomea, is gorgeous as it unfurls.

A seedling Helleborus multifidus underplanted with the spring ephemeral  Cardamine quinquefolia.

The many colors of Corydalis solida when allowed to seed.  I am planning an article on this plant in the future.

Who could have planned this combination?  Native coral bells, Heuchera villosa ‘Caramel’, with a seedling glory-of-the-snow, Chionodoxa forbesii.

The new leaves and flowers of Japanese coral bark maple, Acer palmatum ‘Sango-kaku’, are breathtaking in early spring.  For the full story on this four season tree, read my article Coral Bark Maple.

My latest spring-blooming camellia addition, Camellia x ‘April Rose’, a formal double.


For breath-taking beauty in early spring you can’t beat cherry trees:

A very mature Yoshino cherry, Prunus x yedoensis, that came with our property.  I love the fleeting nature of the flowers and look forward to the day every spring when it rains petals in my nursery.  Its orange fall color is spectacular.

My favorite cherry (at least for today), Prunus x incam ‘Okame’, dominates my courtyard garden in early spring.


I will end with a heart full of cherry blossoms because I love early spring!

Please let me know in a comment/reply what flowers are blooming in your early spring garden.  If you participated in GBBD, please provide a link so my nursery customers can read your post.

Carolyn


Notes: Every word that appears in orange on my blog is a link that you can click for more information.  If you want to return to my blog’s homepage to access the sidebar information (catalogues, previous articles, etc.), just click here.

Nursery Happenings: My second open house sale is this Saturday, April 16, from 10 am to 3 pm, featuring early spring-blooming plants for shade.

97 Comments »

Dividing Hybrid Hellebores

Posted in hellebores, How to, Shade Perennials with tags , , on March 8, 2011 by Carolyn @ Carolyns Shade Gardens

Carolyn’s Shade Gardens is a retail nursery located in Bryn Mawr, PA, specializing in showy, colorful, and unusual plants for shade.  The only plants that we ship are snowdrops and miniature hostas.  For catalogues and announcements of events, please send your full name, location, and phone number (for back up use only) to carolyn@carolynsshadegardens.com.  Click here to get to the home page of our website for catalogues and information about our nursery and to subscribe to our blog.

Spring Planting Issue 2006, Horticulture Magazine

Back when I was writing for gardening magazines, I authored an article for Horticulture on dividing hybrid hellebores.  I suggested the topic because so many gardeners think hybrid hellebores are difficult to grow and wouldn’t think of dividing them.  Nothing could be further from the truth: they are easy to grow and propagate by division.

Horticulture photo shoot in my woodland

Hybrid hellebores are an ideal plant with their large flowers, which are ornamental in the mid-Atlantic from February (and sometimes earlier) to May, substantial wintergreen leaves, and resistance to deer.  For photographs of the full range of their colors, please read my article An Ode to Seed Strain Hellebores by clicking here.

Horticulture photo shoot at my potting bench

Reproduced below is my step-by-step guide to dividing a hybrid hellebore.  You probably can’t read the fine print so I will narrate the high points to go with the photos.

Hybrid hellebores are expensive relative to other perennials because it takes three to five years for them to bloom.  An economical way to increase your supply is to divide your own desirable plants.  The method outlined below can also be applied to all species hellebores except Majorcan hellebore (Helleborus lividus), Corsican hellebore (H. argutifolius), and bearsfoot hellebore (H. foetidus).  However, the most beautiful hybrid hellebore specimens in my garden are my large clumps that have never been divided.  They are four feet across and have hundreds of flowers.  I only divide a hellebore if  it is so special that I can’t replicate it without division.

For your first experience with dividing a hellebore, select a plant with between five and ten flowers, older plants are too woody.  I always divide my hellebores as they are coming into bloom because each flower represents a potential division.  Insert your spade in a circle all the way around the plant and pry it out of the ground as shown in the photos for steps 1 and 2.  Shake it to remove excess soil and then wash away the remaining soil to reveal the extensive root system as shown in step 3.

Before you attempt any cuts, please make sure you have a heavy duty knife that is very sharp, preferably with serrations on some portion of the blade.  Hellebores have very extensive, woody root systems and dividing them with an inadequate tool can be dangerous.  Make your cuts where you see natural divisions in the root system as shown in the photo for step 4, including some roots, woody rhizome, and flower stems in each division.  For your first attempt, separate your plant into no more than three divisions.

Plant your new divisions in full shade to almost full sun.  Dig the hole as shown in the photo for step 5 and mix the existing soil with an equal amount of compost before replanting.  Firmly tamp down the soil, water well, and mulch with ground leaves.  Although you should water until frost for the first season, hybrid hellebores require no supplemental water once established even in droughts.  I never water or fertilize my hellebores, but I do apply ground leaves yearly.

These  are some of the hybrid hellebores that I think are so special that I would consider dividing them

This is the method I use to divide almost all plants, not just hellebores.  I often read in gardening books that you should cut off a portion of the plant while it’s still in the ground and wonder if the writer has ever tried that method.  Only by digging the whole plant up can you avoid injury to the plant by viewing the unique way each individual plant needs to be divided.

Since writing this, I discovered that none other than the famous Gertrude Jekyll and I agree on this point.  In 1898, in Wood and Garden, she wrote: “I never divide things by brutally chopping them across with the spade….The only safe way [to divide a Christmas rose] is to wash the clumps well out and look carefully for the points of attachment, and cut them either with knife or chisel….”

Please let me know in a comment/reply about your experiences with dividing hybrid hellebores.

Carolyn

This is part of a series of articles on hellebores, one of the specialties of my nursery.  Here are links to the other articles:

Part One        Hellebores for Fall

Part Two       An Ode to Seed Strain Hellebores

Part Three   Christmas Rose: The Perfect Hellebore

Part Four      Dividing Hybrid Hellebores

Part Five       The Sex Lives of Hellebores

Part Six          Double Hellebores

Part Seven   Cutting Back Hellebores

Notes: Every word that appears in orange on my blog is a link that you can click for more information.  If you want to return to my blog’s homepage to access the sidebar information (catalogues, previous articles, etc.), just click here.

Nursery Happenings: I am currently accepting orders for snowdrops, including  mail orders.  For the catalogue and order information, click here.  I am taking reservations for my March 18 & 19 Hellebore Seminars.  For the brochure and registration information, click here.  The March 6 session of Charles Cresson’s Snowdrops and Other Winter Interest Plants Seminar has been rescheduled for March 13 and has a few spaces left.  For the brochure and registration information, click here.

87 Comments »

Christmas Rose: The Perfect Hellebore

Posted in hellebores, Shade Perennials, winter interest with tags , , , , , on March 2, 2011 by Carolyn @ Carolyns Shade Gardens

Carolyn’s Shade Gardens is a retail nursery located in Bryn Mawr, PA, specializing in showy, colorful, and unusual plants for shade.  The only plants that we ship are snowdrops and miniature hostas.  For catalogues and announcements of events, please send your full name, location, and phone number (for back up use only) to carolyn@carolynsshadegardens.com.  Click here to get to the home page of our website for catalogues and information about our nursery and to subscribe to our blog.

The pure white, outward-facing flower of Christmas rose, Helleborus niger

In the rush to seek out the newest and rarest hellebores on the market,  I am afraid that gardeners are neglecting to explore fully the wonderful qualities of the Christmas rose, Helleborus niger.  Christmas rose is a  species hellebore no garden should be without.  In addition, recently introduced cultivars have made this species a must have for gardeners seeking fall and winter interest.

The smooth, blue-green leaves of Christmas rose are pristine and beautiful and often have red stems

Christmas roses have been in cultivation for hundreds of years and are a very distinctive species hellebore with little variation in the wild.  They are native to woodlands and open areas of the central and eastern Alps in Switzerland, Germany, Austria, Slovenia, Croatia, and northern Italy.  They are about 9 to 12″ in height with a very woody root system.  The smooth, leathery dark blue-green leaves are deeply divided into 7 to 9 leaflets with irregular teeth around the tip.  If covered with snow, the leaves will stay pristine through the winter.

The buds of Christmas rose are quite ornamental

Christmas rose exhibiting its desirable characteristic of outward-facing flowers

Christmas roses have pure white flowers on upright fleshy stems.  The full, rounded blossoms are outward-facing and open flat with a width of 2 to 5″ and a bloom time starting anywhere from November to March, depending on the cultivar.  The flowers often age to shades of pink to red.  They make a very good cut flower.

Established Christmas roses produce an abundance of flowers

The flowers on Christmas roses often age to pink

Christmas roses prefer a well-drained site rich in organic matter.  High or dappled shade is best, and they seem to prefer the edge of beds.  Although they don’t like to be moved, they are easy to divide because their leaves and flowers are on separate stems.  Once they are established, all they need is a yearly mulch of ground leaves.  Christmas roses are usually found in areas with alkaline soil and several sources recommend applying lime, but I have never found this necessary.

The 3 1/2″ wide flowers of ‘Praecox’ Christmas rose in mid-February in my garden

There are several cultivars of Christmas rose that have enhanced the ornamental qualities of this already desirable hellebore.  The straight species blooms in the mid-Atlantic area of the U.S. in early March, after the hybrid hellebores, Helleborus x hybridus.  The Christmas rose cultivar ‘Praecox’ moves the start of bloom time up from March to mid to late January.  ‘Praecox’ also produces an abundance of flowers at a young age unlike the straight species, which can take a while to establish itself.

‘Jacob’ Christmas rose coming into bloom in my garden in November–its flowers are 3″ wide

Two more recent introductions from the Helleborus Gold Collection in Germany have moved the start of Christmas rose’s bloom time to November and extended it to May. ‘HGC Jacob’ begins blooming in my garden in mid-November, while ‘HGC Josef Lemper’ begins around December 1.  Both cultivars continue blooming into May.  For detailed descriptions of ‘Jacob’ and ‘Josef Lemper’, read my article Hellebores for Fall by clicking here.

The 4″ wide flowers of ‘Josef Lemper’ blooming through the snow in my garden in February

Although rarely for sale, I treasure my ‘Potter’s Wheel’ Christmas rose, a cultivar with huge flat, 5″ wide symmetrical flowers.  Although most ‘Potter’s Wheel’ is not true to type because it is seed grown, I acquired mine from Arrowhead Alpines, which vegetatively propagates their plants from the original ‘Potter’s Wheel’ in England.

The huge 5″ wide flowers of authentic ‘Potter’s Wheel’ Christmas rose

I hope that you will consider Christmas rose the next time you add to your hellebore collection.

Please let me know in a comment/reply about your own experiences with growing Christmas roses.

Carolyn

This is part of a series of articles on hellebores, one of the specialties of my nursery.  Here are links to the other articles:

Part One        Hellebores for Fall

Part Two       An Ode to Seed Strain Hellebores

Part Three   Christmas Rose: The Perfect Hellebore

Part Four      Dividing Hybrid Hellebores

Part Five       The Sex Lives of Hellebores

Part Six          Double Hellebores

Part Seven   Cutting Back Hellebores

Notes: Every word that appears in orange on my blog is a link that you can click for more information.  If you want to return to my blog’s homepage to access the sidebar information (catalogues, previous articles, etc.), just click here.

Nursery Happenings: I am currently accepting orders for snowdrops, including  mail orders.  For the catalogue and order information, click here.  I am taking reservations for my March 18 & 19 Hellebore Seminars.  For the brochure and registration information, click here.  I have a few spaces left for Charles Cresson’s Snowdrops and Other Winter Interest Plants Seminars.  For the brochure and registration information, click here.

86 Comments »

Evergreen Ferns for Shade & Stylish Blogger Award

Posted in evergreen, Shade Gardening, Shade Perennials with tags , , , , , , , , , , on February 24, 2011 by Carolyn @ Carolyns Shade Gardens

Carolyn’s Shade Gardens is a retail nursery located in Bryn Mawr, PA, specializing in showy, colorful, and unusual plants for shade.  The only plants that we ship are snowdrops and miniature hostas.  For catalogues and announcements of events, please send your full name, location, and phone number (for back up use only) to carolyn@carolynsshadegardens.com.  Click here to get to the home page of our website for catalogues and information about our nursery and to subscribe to our blog.

US. native hart’s-tongue fern, Phyllitis scolopendrium, is especially beautiful in my garden in the spring as it unfurls, April 2010

Spring is in the wind here today with unseasonably warm temperatures of almost 70 degrees F (21 C).  The ten day forecast shows more seasonable temperatures with highs in the mid-forties.  Although spring is definitely on the way (it snowed and went down to 10 degrees since I wrote this!), the beauty of snow has been replaced with the grays and browns of late winter, not a look I treasure.  That makes any plants that liven up the gardens very important at this time of year, and evergreen ferns do just that.  Five of my favorites are profiled below.

Hart’s-tongue fern is also very beautiful in the fall, mid-November 2010 with Christmas rose and pulmonaria

Hart’s-tongue fern, Phyllitis scolopendrium (zones 5 to 9), may be my favorite all time fern (today anyway).  It has a very unique look that is absolutely magical when it unfurls in the spring (photo at top), and it maintains its good looks until it disappears under the snow (photo above).  Even now it is quite presentable after our snowy and icy winter with only slight browning.

Although I call it a US native, hart’s tongue fern is actually indigenous to Europe, Asia, and North America, including the mid-Atlantic.  However, according to John Mickel in Ferns for American Gardens, the US variety does poorly in cultivation, and all cultivated material is from the European variety.  It is a clump-forming fern, growing 8 to 16″ tall with shiny, leathery fronds.  It is easy to grow but suffers if over-watered and must be well-drained.  I grow mine in part shade on a slope with plenty of organic matter.  In the wild it is limestone-loving, but I haven’t found this to be necessary in my garden.


Japanese holly fern, Cyrtomium falcatum, makes quite a statement in my mid-November garden

Japanese holly fern, Cyrtomium falcatum (zones 6 to 10), is another favorite of mine.  Individual plants grown as a specimen can be up to 2 feet tall and 3 feet across making quite a bold statement in the garden.  It grows well in the deep shade of my woodland garden where there is more construction rubble than soil as well as on my partly shaded but very open back slope.  Right now it is serving as a backdrop for the giant snowdrops, Galanthus elwesii, that are emerging between its fronds, which have been flattened by snow.

Japanese holly fern is native to Hawaii (do we call it a US native?), southern Africa, and across southern Asia.  Although it is uncommon in the mid-Atlantic, it is quite commonly grown in the southern parts of the US and has naturalized in some areas.  It is clump-forming with an elegant, vase-like habit and 4 to 7″ wide, glossy dark green fronds with toothed pinnae that resemble holly leaves.  It prefers good drainage and organic soil in part to full shade.


U.S. native deer fern, Blechnum spicant, also shines in my mid-November garden

Deer fern, Blechnum spicant (zones 5 to 8), was new to my garden in spring of 2010 so, despite its moist native habitat, it survived  this summer’s record-breaking heat and drought.  The unusual texture provided by its linear segments is a great addition to the border in front of my fall-blooming camellias.  It is in an eastern-facing location with high shade.  Right now, though flattened by the snow and ice, the fronds look almost the same as in the photo above despite our hard winter.

Deer fern is native to moist coniferous forests in the US Pacific Northwest and Europe.  Its two types of fronds are very distinct.  The sterile fronds (pictured above) are 8 to 20″ long, evergreen, and prostrate, while the fountain-like fertile fronds, which emerge in the spring, are 16 to 24″ long,  deciduous, and erect.  It puts on quite a show in the spring.  Deer fern grows in part to full shade in acid soil enriched with organic matter and spreads slowly by short creeping rhizomes.


Tassel fern, Polystichum polyblepharum, growing in dry shade at the base of my Kentucky coffee tree in mid-November

Tassel fern, Polystichum polyblepharum (zones 5 to 8), is a very trouble-free, evergreen fern that I have grown for years.  I found that it does not do well in full shade, but thrives in high shade with dappled light.  It is absolutely gorgeous in the spring, when the reddish, hairy new fronds unfurl  (photo below) and still looks spectacular at the end of a hot dry summer (photo above).  Right now it is flat to the ground exposing its fleecy stems even more.

The bristly new fronds of tassel fern unfurl, photo courtesy of the Missouri Botanical Garden PlantFinder

Tassel fern is native to Japan and southern Korea.  According to Mickel, its species name means “many eyelashes” referring to its bristly, pubescent stems, which are really quite eye-catching even when fully emerged.  Its lustrous dark green fronds form an elegant, vase-like crown 2 feet tall and 2 feet wide.  It makes an excellent specimen.  Grow it in part shade in a well-drained, humus-rich site.


U.S. native Christmas fern, Polystichum acrostichoides, is ornamental 365 days a year in my garden, photo courtesy of the Missouri Botanical Garden PlantFinder

Christmas fern, Polystichum acrostichoides (zones 3 to 9), is without a doubt the best evergreen fern for mid-Atlantic US gardens.  It grows well everywhere in my garden from my deeply shaded woodland to more sunny, rocky slopes.  Right now, although not as upright as the photo above, it is the most presentable evergreen fern after our long, hard winter.

Christmas fern growing an a rocky outcropping in Great Smoky Mountain National Park, Tennessee

Christmas fern is native to the whole eastern half of North America, including all of Pennsylvania.  According to Mickel, its common name arose because it was used by early settlers as Christmas decorations.  The lance-shaped, dark green, leathery fronds provide excellent winter interest.  The two foot tall, fountain-like clumps increase in size over time, forming multiple crowns and making it easy to divide.  Christmas fern is very easy to grow in part shade to full shade and in moist to dry soil and can be used on slopes to prevent erosion.

I hope I have convinced you to go outside and investigate where you can add some evergreen ferns for year round interest.

Please let me know in a comment/reply what evergreen ferns you grow in your garden.

Carolyn


Notes: John Mickel is Curator of Ferns for the New York Botanical Gardens.  His book, Ferns for American Gardens, is an excellent resource discussing over 400 ferns with hundreds of photos.  I have added it to my sidebar under Books so you can always find it.

Every word that appears in orange on my blog is a link that you can click for more information.  If you want to return to my blog’s homepage to access the sidebar information (catalogues, previous articles, etc.), just click here.

Nursery Happenings: I am currently accepting orders for snowdrops, including  mail orders.  For the catalogue and order information, click here.  I am taking reservations for my Hellebore Seminars for the Totally Obsessed.  For the brochure and registration information, click here.  I have three spaces left for the March 6 session of Charles Cresson’s Snowdrops and Other Winter Interest Plants Seminar.  For the brochure and registration information, click here.

I have recently been honored with the Stylish Blogger Award by six different blogs, and I want to thank them for the accolade.  My friends would really laugh to hear the word stylish applied to me as a person, but I am glad I am making up for that with my blog.  I am not following the award rules, but instead letting you know who gave me the award in hopes that you will visit their blogs.  Here are the links and some information to entice you to visit them:

Deb’s Garden: Deb shares her gardening experiences on 3.5 partially wooded acres in Helena, Alabama.

Island Threads: Frances battles the elements on the northern tip of an island off the northwest coast of Scotland.

Orchid de Dangau: Makirimi collects and grows orchids in Malaysia.

Southern Meadows: Karin writes about nature and gardening in northeastern Georgia.

Sweet Bean Gardening: Hanni is developing a cottage garden in Indiana with her two young daughters.

The Suburban Gardener: Lily specializes in lilies and hostas in her shady suburban Chicago, Illinois, garden.


66 Comments »

An Ode to Seed Strain Hellebores

Posted in hellebores, Shade Perennials with tags , on January 28, 2011 by Carolyn @ Carolyns Shade Gardens

Carolyn’s Shade Gardens is a retail nursery located in Bryn Mawr, PA, specializing in showy, colorful, and unusual plants for shade.  The only plants that we ship are snowdrops and miniature hostas.  For catalogues and announcements of events, please send your full name, location, and phone number (for back up use only) to carolyn@carolynsshadegardens.com.  Click here to get to the home page of our website for catalogues and information about our nursery and to subscribe to our blog.

Plant breeders have been hard at work for years trying to get hybrid hellebores (Helleborus x hybridus) to submit to tissue culture.  For a long time the hellebores were winning, and I was quietly cheering from the sidelines.  But it seems even the mighty hybrid hellebore, the toughest plant I know, was not a match for modern technology.  You can now purchase tissue cultured hellebores that all look the same.  But my question is: why would you want to?

You have to realize that I am a person who treasures diversity even with its inherent risks of dissatisfaction and unpredictability.  I still shop at my local hardware store with its wood floors and oily smells.  I have a tab, the people there know me, the people there know hardware.  They might not have what I want—I can take that risk.  You couldn’t get me to go to a Home Depot if my life depended on it.

When I travel, I try to stay at a local B&B.  I introduce myself to the owners, I appreciate their eclectic decorating schemes, I eat their funky breakfasts.  They know the local area, they have eaten in the restaurants, they can give directions.  I stayed at a chain recently where the very nice desk clerk was not aware that there was a gas station two doors down.

So I am a person who doesn’t treasure predictability, as in sameness, the way most people seem to.

When it comes to hybrid hellebores, I don’t understand the most common concern expressed by gardeners: if the hellbore is grown from seed you can’t be 100% sure what the flowers will look like unless it’s in bloom.  There is an element of risk involved in the purchase.  Tissue culture of hellebores was developed to eliminate this unacceptable risk.

But to me that is the magic of hybrid hellebores: each plant is a unique individual, with the potential for inheriting genetic material from any of the possible 9 or more species that could be its parents.  It’s like having a baby, you don’t know and you can’t control who he or she will be because that is determined by generations of intertwining DNA.  I am assuming that even in the predictability driven US, where we invented the almighty chain store, we still would rather roll the dice than clone the cute little baby next door.  I could be mistaken.

Don’t get me wrong, the poster child for tissue-cultured hybrid hellebores ‘Kingston Cardinal’ with its large double raspberry flowers is gorgeous.  I would grow it.  But here is its main marketing mantra: Tissue cultured so every plant is identical.  Every one on your block can have the exact same plant right next to their ‘Autumn Joy’ sedum and ‘Goldsturm’ rudbeckia.   I like ‘Autumn Joy’ and ‘Goldsturm’ (I have them in my garden), but hybrid hellebores offer so much more than that: the diversity of life in a beautiful flower.  And tissue culture has the potential to destroy that magic just like we are losing the genetic magnificence of apples, and chickens, and tomatoes.

Here is my ode to seed strain hybrid hellebores:

photo Carol Lim

photo Carol Lim

photo Carol Lim

Please let me know in a comment which hellebore is your favorite.

Carolyn

This is part of a series of articles on hellebores, one of the specialties of my nursery.  Here are links to the other articles:

Part One        Hellebores for Fall

Part Two       An Ode to Seed Strain Hellebores

Part Three   Christmas Rose: The Perfect Hellebore

Part Four      Dividing Hybrid Hellebores

Part Five       The Sex Lives of Hellebores

Part Six          Double Hellebores

Part Seven   Cutting Back Hellebores

Notes: Every word that appears in orange on my blog is a link that you can click for more information.  If you want to return to my blog’s homepage to access the sidebar information (catalogues, previous articles, etc.), just click here.

In my post I Need Your Help, I asked readers to send cards to the daughter of Kartik who was the subject of my post New Year’s Resolution to Edit the Garden.  I would still appreciate your help with this appeal.  Tara is home from the hospital, which is good news, but being confined to home and suffering daily intrusive medical procedures has left her lonely and depressed.  The cards she has received from all of you are a major bright spot in her day, and your good wishes and prayers are an inspiration to Kartik.  If you still wish to mail a card, they would love to receive it (Tara Patel, 2216 Oakwyn Road, Lafayette Hill, PA  19444, USA).  Thanks.

The view from here:


92 Comments »

Flowering Wintergreen Ground Covers for Shade

Posted in evergreen, groundcover, Shade Perennials with tags , , , , , , , , on January 1, 2011 by Carolyn @ Carolyns Shade Gardens

Carolyn’s Shade Gardens is a retail nursery located in Bryn Mawr, PA, specializing in showy, colorful, and unusual plants for shade.  The only plants that we ship are snowdrops and miniature hostas.  For catalogues and announcements of events, please send your full name, location, and phone number (for back up use only) to carolyn@carolynsshadegardens.com.  Click here to get to the home page of our website for catalogues and information about our nursery and to subscribe to our blog.

golden groundsel as groundcover in my woodland in spring

Here in the mid-Atlantic (US), we go through long periods of winter weather that are just plain cold without the compensation or covering of snow.  Any patches of exposed ground look barren and downright ugly.  That is why, during this time of year, I treasure any little patch of green, any ground cover that is presentable through the winter.  Yes, I have the usual evergreen  triumvirate of vinca, ivy, and pachysandra.  I can even find good things to say about each of them.  But I want more: native plants, deer resistance, tolerance of dry shade, fragrance, abundant flowers, drought tolerance, and beautiful foliage.  All four of the shady ground covers described below have a majority of these desirable characteristics.

fragrant flowers of native golden groundsel

Our native golden groundsel, Senecio aureus, has to be my favorite all time ground cover.  It spreads as fast and aggressively as any of the reigning three.  It is not a plant to be mingled into your perennial beds: it is a plant for the bare patch—wet, dry, sunny, shady, infertile, clay—where nothing else grows.  Put it behind the garage, around the base of a tree with surface roots, along the bottom of a fence, or in your “hell strip” by the road.  You will be rewarded with evergreen leaves through winter and an abundance of  fragrant flowers suitable for arrangements.

winter foliage of golden groundsel

Golden groundsel is native to meadows and woods of the eastern half of the US.  It quickly creeps to form large, 6″ tall patches of wintergreen leaves even in full dry shade.  In spring, buds emerge bright maroon-purple opening to cheery yellow, 2′ tall fragrant flowers in May.  The new leaves, which appear after the flowers, are large and round, providing a bold texture (see photo at top).  My deer have never touched it.

creeping phlox ‘Bruce’s White’ in my woodland in spring

The other native I highly recommend for wintergreen shady ground cover is creeping phlox, Phlox stolonifera.  Not as aggressive as golden groundsel, creeping phlox can be mingled in your perennial beds or used alone under shrubs and trees.  It moves at a medium rate to fill in around surrounding plants without overwhelming them.  Then, from March into May, it is covered with blue, pink, white, or purple flowers.

creeping phlox with foamflower (Longwood Gardens)

winter foliage of creeping phlox

Creeping phlox is native to wooded areas of the eastern US.  The 2 to 3″ tall mat-forming leaves are completely covered by 8″ tall flowers in spring.  It is very tolerant of soil conditions and, once established,  grows well in full dry shade.  My deer leave it alone.  As an added benefit, it comes in white, ‘Bruce’s White’ (photo above), pink, ‘Home Fires’ or ‘Pink Ridge’, pale lavender-blue, ‘Blue Ridge’, or purple, ‘Sherwood Purple’ or ‘Fran’s Purple’.  The purple cultivars are the most vigorous, and I think the most beautiful.

beautiful colors of creeping phlox

For a refined and elegant, truly evergreen ground cover, I recommend dwarf sweetbox, Sarcococca hookeriana var. humilis.  Technically a small shrub, dwarf sweetbox slowly creeps by means of underground stolons to form a 4′ patch over 10 years.  But it is well worth the wait—or if you are impatient, planting it close together—because in February its tiny white flowers produce the most heavenly fragrance for your winter enjoyment.  My patch perfumes my whole garden.

dwarf sweetbox in winter as ground cover under a dogwood

Dwarf sweetbox is native to the western Himalayas in China.  Its stems grow to 18″ with narrow, glossy evergreen leaves and creamy white, extremely fragrant flowers in February in the mid-Atlantic.  It thrives in average soil and part to full shade and, once established, is tolerant of drought.  Deer do not bother it.  It tends to be pricey so I planted very small plants which periodically needed to be poked back into the ground as it roots right below the soil surface.

dwarf sweetbox flowers getting ready to bloom

The final plant that has the characteristics I want in shady wintergreen ground covers is hybrid hellebore, Helleborus x hybridus.  My customers are always asking me what to do with the multitude of seedlings produced by their hybrid hellebores, and here is the answer: move them to a place where you need ground cover.  In three years, you will have 2′ wide plants covered with huge, beautiful flowers from February to May and pristine foliage that remains green all winter—for free!  I have done this under my Kousa dogwood and throughout my woodland, and the result is spectacular.

hybrid hellebores in winter as ground cover under Kousa dogwood

Hybrid hellebores have many different parents mainly native to eastern Europe.  Their wintergreen leaves are 2′ tall and remain ornamental until new leaves appear in spring.  Each plant produces a multitude of large, cup-shaped nodding flowers in many colors ranging from dark purple to pink to white to green with doubles, spots, and picotee edges quite common.  They grow anywhere in any soil and light conditions as long as they are well-drained.  If you want to spoil them, give them organic matter, but no supplemental water is required after they are established even in the worst drought.  They are slightly poisonous so deer do not eat them.

some of the flowers on my ground cover hybrid hellebores

Next spring when you are looking for ground covers, I hope you will consider one of the fantastic four described above.  In the meantime, leave a comment with the name of your favorite wintergreen ground cover for shade.

Carolyn

Notes: Every word that appears in orange on my blog is a link that you can click for more information.  If you want to return to my blog’s homepage to access the sidebar information (catalogues, previous articles, etc.) or to subscribe to my blog, just click here.

46 Comments »

« Older Entries
Newer Entries »