Archive for July, 2011

Theme Gardens Part 1: Silver and Blue

Posted in landscape design, Shade Gardening with tags , , , , , on July 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.

Blue includes purple (most “blue” flowers are purple), here hydrangea relative, perennial Chinese deinanthe, D. caerulea.

I am not a trained landscape designer.  Although I did take two landscape design courses at the Temple University Ambler  School of Horticulture, it didn’t stick.  I still don’t plan my gardens ahead of time but instead operate by gut instinct.  I can hear true garden designers like Allan at allanbecker.gardenguru and Donna at Garden Walk Garden Talk sighing all the way from Montreal and Niagara Falls, respectively.  It helps that I really know plants–their heights, habits, textures, blooms, cultural requirements, etc.–but I still do a lot of shifting around and replacing in my gardens that could probably be avoided by a little advance planning.

‘Jack Frost’ brunnera, B. macrophylla ‘Jack Frost’, is a star performer in my silver and blue garden for its true blue flowers and silvery blue leaves.

One technique that has really helped improve my garden’s design (and avoid all the rearranging) is theme gardens.  I know what you are thinking, here’s where she drags out photos of her “white garden” ala Vita Sackville-West.   Well, I don’t have a strictly white garden, but I do have color theme gardens.  My sunniest area is a chartreuse, orange, and purple garden, my main perennial bed focuses on peach, pink, gold, and purple, near the woodland there is a gold and yellow garden, around the deck is a moon garden  (plants that are ornamental at night, mostly white), and across from the deck is my silver and blue garden, which I want to share with you today.

Silvery fragrant flowers of native ‘Brandywine’ foamflower, Tiarella cordifolia ‘Brandywine’, an excellent groundcover whose shiny green leaves turn red in the fall.

Why limit myself that way?  Because having a theme helps me decide what plants belong in a particular garden and what plants don’t.  It provides a unifying factor.  I find it much easier to achieve a cohesive whole if I know why each plant is there, and color themes force me to consider each addition carefully.  And it must work because those are the gardens I get the most compliments on from customers and garden tours.

A massive native Kentucky coffeetree is the focal point of the garden, which is surrounded by white pine needle paths.  Because the tree is so big, I had to climb up on the roof to get shots of the bed.  This photo shows you all the gardens in the area.

My silver and blue garden surrounds a native Kentucky coffeetree, Gymnocladus dioicus, that may be over 100 years old.  It is approaching 100 feet tall and is 8 feet in circumference.  Luckily it does not have extensive surface roots.  The bed is an oval 12 feet wide and 20 feet long.  It started with leftover plants from one of my fall nursery sales, which happened to be silver and blue.  As part of my quest to eliminate all the grass on my back hill, I planted the leftover plants at the base of the Kentucky coffeetree, and my silver and blue garden was born.  I have been adding to it for about five years, and now it is quite mature.

This photo shows the overall design of the bed.  Despite its simple look, there are actually over 25 plant varieties.

One important caveat before I get to the plants, I rarely plant less than five of any one perennial (even with shrubs, I normally plant three).  My customers are always asking me how to have a garden like mine.  Near the top of the list, somewhere after compost, is quantity.  You need a lot of the same plant to make it show up in your garden.  One does not work, three is barely sufficient, five achieves critical mass, and seven is optimal (obviously this depends somewhat on the size of the plant, the bed, and your garden as a whole).

Northern end of the bed dominated by large patches of ‘Dawson’s White’ and ‘Jack Frost’ brunnera and ghost fern.

Southern end of the bed with Hosta ‘Ginko Craig’ and ‘El Nino’, variegated Japanese kerria, K. japonica ‘Variegata’, and white-flowered bigroot hardy geranium, G. macrorrhizum ‘Album’.

The theme of the bed is silver (also incorporating white) and blue (also including lighter shades of purple).  I find that most flowers labeled blue really are a shade of purple.  The colors are provided by the flowers and, probably more importantly, the foliage.  Again, blue leaves are in reality bluish green.  I included some plants that don’t fit the theme for contrast.  Here are some closeups of the bed and some more photos of the individual plants:

Click any photo to enlarge.  A close up of the north end revealing some of the lesser players.  Between the two types of brunnera, Hosta ‘Blueberry Cobbler’ with very blue leaves and gorgeous blueberry purple stems and native sedge ‘Bunny Blue’, Carex laxiculmus ‘Bunny Blue’.  Around the ‘Dawson’s White’, a lungwort seedling, Pulmonaria sp., with silver spots and deep blue flowers, and double white-flowered hybrid hellebore ‘Double Integrity’, H. x hybridus ‘Double Integrity’.

Looking around the back side of the bed reveals Chinese deinanthe (flower pictured in first photo) behind the kerria; native variegated northern sea oats, Chasmanthium latifolium ‘River Mist’ to the left;  blue-leafed and white-flowered dwarf Solomon’s seal, Polygonatum falcatum ‘Pumilum’ in front;and blue-leafed native white wild bleeding-heart, Dicentra eximia ‘Aurora’, in the foreground.

White and silver variegated foliage really shows up in a shade garden: clockwise from upper left, ‘Dawson’s White’ brunnera, ‘El Nino’ hosta (very blue), ‘River Mist’ northern sea oats, and ‘Ginko Craig’ hosta.

‘Lilafee’ barrenwort, Epimedium grandiflorum ‘Lilafee’, provides gorgeous purple flowers in April (the yellow corydalis is an interloper).

Providing blue tones, clockwise from upper left: ‘Bunny Blue’ sedge, Japanese kerria ‘Variegata’, ‘Bertram Anderson’ lungwort with blue flowers and silver leaves, and dwarf Solomon’s seal ‘Pumilum’.

The blue flowers of brunnera are beautiful for a long time in late spring.

Relief from too much variegation is provided by clockwise from upper left: evergreen tassel fern, Polystichum polyblepharum, evergreen hybrid hellebore, H. x hybridus, Asian jack-in-the-pulpit, Arisaema consanguineum, and native Virginia creeper, Parthenocissus quinquefolia, which climbs the Kentucky coffeetree.

The color scheme is carried across the pine needle path to the garden surrounding the deck.

In placing the plants in the bed, consideration was given to cultural conditions (soil type, i.e. dry, and light availability), height, bloom time, texture, and habit, but the primary factor was silver and blue color.  The result is a garden with almost year round interest and plants that work together to make the whole more lovely than the sum of its parts.

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 website’s homepage to access the sidebar information (catalogues, previous articles, etc.), just click here.

Nursery Happenings: The nursery is closed until it cools off in the fall around the middle of September.  If you are on my customer email list, look for an email.  If not, sign up by sending an email to carolynsshadegardens@verizon.net with your name and phone number.

July GBBD: The Energizer Bunnies of Summer

Posted in Garden Blogger's Bloom Day, landscape design, native plants, Shade Shrubs with tags , , on July 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.

‘Westerland’ shrub rose just keeps sending out new sprays of blooms.  EB

Summer is here, 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 this season an exciting time in your landscape.  This time of year I like to focus on the “energizer bunnies” of the garden: plants that bloom or rebloom from late spring through fall. Plants in this category will have “EB” following their caption description.  They give me a reason to stroll in my garden when the weather is not as inviting as spring.  Make sure your garden doesn’t end with the spring rush by adding plants that bloom through summer. 

I love irises, and I think Japanese iris, I. kaempferi, is my favorite.  The colors and the flower shapes are magical.

Make a list and take photographs so that when you are shopping for plants you know what you need and where it should go.  You never know what you might find waiting in your garden like new blooms on my ‘Westerland’ rose (photo at top), which I photographed during my own  inventory.

The remontant or reblooming daylilies are some of my “bunnies”.  They start early and rebloom all season.  Clockwise from left: Hemerocallis ‘Black Eyed Stella’, ‘Stella de Oro (d’Oro)’, and ‘Happy Returns’.  EB

July 15 is Garden Blogger’s Bloom Day for July 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 July stroll through Carolyn’s Shade Gardens, starting with woody plants:

I cut back my ‘Purple Robe’ smokebush, Cotinus coggygria ‘Purple Robe’, every year to improve the leaf color so it never blooms, but I think the red beebalm, Monarda didyma, compliments it nicely.

My grove of native bottlebrush buckeye, Aesculus parviflora, is stunning in bloom in full shade.


St. John’s wort is a woody subshrub that I cut back almost to the ground in the spring when I see signs of new growth.  Hypericum calycinum on the left and H. androsaemum ‘Albury Purple’ on the right.

I don’t grow ‘Winterthur’ beautyberry, Callicarpa ‘Winterthur’,  for the flowers, but between the lime green leaves, the pink flowers, and the striking light purple berries in fall, this shrub is a workhorse.  EB


Himalayan leptodermis, L. oblonga, starts blooming in June and doesn’t quit until later in the fall.  Its flowers are small but abundant.  EB

‘Black Knight’, Buddleia davidii ‘Black Knight’, is my favorite butterfly bush cultivar.  It is the first to come into bloom in June and doesn’t stop until at least mid-fall.  EB

My native honeysuckle vines are still throwing out blooms after a spectacular spring show, here Lonicera sempervirens ‘John Clayton’.  EB

And here native Lonicera sempervirens ‘Crimson Cascade’.  EB

Native oakleaf hydrangea, H. quercifolia, will keep going until winter with its beautiful flowers turning colors and then forming a dried arrangement.  If you don’t have this shrub, it should go to the top of your list!  EB

I am surprised that more gardeners do not grow native flowering raspberry, Rubus odoratus.  It is a gorgeous tropical looking shrub for full shade with brightly colored raspberry flowers.  The native bees love it.

There are so many perennials in bloom that I had to leave a lot out.  I am focusing on the unusual plants and the ones that bloom for a long time:

The deep violet flowers on red stems of ‘Caradonna’ sage, Salvia ‘Caradonna’, continue to rebloom all summer while the yellow corydalis, C. lutea, behind it blooms nonstop from April to December.  EB

This rare and unusual plant, Chinese foxglove, Rehmannia elata, appeared in my rock garden without my help, but I am glad it did.

Butterfly weed, Asclepias tuberosa, with catmint, Nepeta ‘Walker’s Low’

Many hosta have quite beautiful flowers, especially if they are compact and white, here the species Hosta tokudama.

Reportedly there are 8,000 hosta cultivars, but some just stand out in the garden: Hosta ‘Summer Lovin’

The gorgeous corrugated blue leaves, white flowers, and elegant habit of Hosta ‘Blue Angel’ have stood the test of time.

Hosta ‘Great Expectations’ is also a classic with white flowers.

I am infatuated with the mouse ears series of miniature hostas, and one of their wonderful attributes is that their flowers are compact and proportional to their size, here ‘Holy Mouse Ears’.

I have tried so many of these orange coneflowers, Echinacea cultivar,  only to have them die, revert, or display a virus.  This is the only one that survived and, of course, I lost its tag.

‘Concord Grape’, Tradescantia ‘Concord Grape’, is my favorite cultivar of US native spiderwort.  I cut it to the ground completely after flowering to rejuvenate the plant.

Giant ox eye, Telekia speciosa, is an unusual sunflower-like perennial that reaches 4 to 6 feet tall and 2 to 3 feet wide in the full shade of my London plane trees.

Solitary clematis, C. integrifolia, just keeps blooming and blooming, here with orange million bells, Calibrachoa ‘Aloha Hot Orange’EB

I always read that the groundcover autumn leadwort, Ceratostigma plumbaginoides, blooms in the fall, but in my garden it starts in June and keeps going through fall.  You can’t beat the true blue color all season.  EB

I have a collection of hens and chicks, but I think this is my favorite: Sempervivum arachnoideum ‘Red Cobweb’.  When not in bloom, the chicks are red and covered with cobwebs.

This is the second flush of bloom on ‘Sarastro’ bellflower, Campanula ‘Sarastro’, the first flush has double the flowers.  I have tried several large-flowered bellflowers, and ‘Sarastro’ is the best.  EB

I devote a large space in my meadow (you have to, it spreads) to beebalm, Monarda didyma, the flowers are so spectacular.

I always let some of my onion sets get away from me so they will produce this beautiful flower after all my other alliums are done.

If I had the right growing conditions for red hot pokers, Kniphofia ‘Alcazar’, I would have every cultivar, but sunny, hot, dry, well drained conditions are few and far between at Carolyn’s Shade Gardens.

Spiny bear’s breeches, Acanthus spinosus, just keeps blooming and blooming.  EB

I will leave you with the very unusual and long lasting  ‘Miss Willmott’s Ghost’ sea holly, Eryngium giganteum ‘Miss Willmott’s Ghost’.  Miss Willmott was a 19th century English gardener who secretly sprinkled seeds of this sea holly in gardens she visited leaving behind her “ghost”.  EB

Please let me know in a comment/reply which flowers are “energizer bunnies” in your summer garden.  If you participated in GBBD, please provide a link so my nursery customers can read your post.

Carolyn

I made this collage for a customer email, but I couldn’t resist including it in this article.  The flowers of summer:

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 website’s homepage to access the sidebar information (catalogues, previous articles, etc.), just click here.

Nursery Happenings: The nursery is closed until it cools off in the fall around the middle of September.  If you are on my customer email list, look for an email.  If not, sign up by sending an email to carolynsshadegardens@verizon.net with your name and phone number.

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.

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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’

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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.