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Full Sun

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Partial Shade

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Drought Tolerant

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Picture Available

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Drawing Available

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Hardiness Zone Map


Corydalis

The closest relatives of this striking genus are the bleeding hearts. The Greek name, meaning “crested lark,” alludes to the elegant bird-like appearance of the flowers, which grow in ra­cemes among ferny foliage.

<i>Corydalis</i> ‘Blackberry Wine’

Drink in the multitudes of pendulous, white-

flecked flowers adorning this sweetly perfumed and richly hued, quick-to-establish Corydalis. The blooms really are the color of blackberry wine, and set against fern-like blue-green leaves, impart a heady aspect to the garden, especially when contrasted with the golden blades of Hakonechloa ‘All Gold’.

Blooms May–November

Size: 10" high x 18" wide.

Hardy to zone 5.

Exalted for its taller, more robust and long-flowering visage, this exciting new C. flexuosa and C. elata cross was bred in France and recently introduced in England. Embodying the best qualities of both parents, ‘Blue Line’s vigorous fine cut foundation maintains a reliable summer presence, highlighting a honey-scented flood of white-throated, deep metallic-blue blossoms on tall reddish tinted stems. The eye-catching flowers keep coming from spring ’til fall and create quite a show alongside Begonia ‘Alba’ and flanked by bold-leafed Rodgersia ‘Bronze Form’.

Blooms May–September

Size: 15" high x 15" wide.

Hardy to zone 4.

<i>Corydalis curviflora</i> var. <i>rosthornii</i> ‘Blue Heron’

Keenly selected on a collecting trip to Sichuan, China by Dan Hinkley, ‘Blue Heron’ heralds the largest, darkest, richly blue blooms of all our Corydalis offerings. Finely divided blue-green foliage becomes a gossamer-like backdrop for the fragrant sapphire-blue flowers, whose extraordinary cool colors can be enjoyed near fellow shade dweller Epimedium ‘Frohnleiten’.

Blooms April–June

Size: 9" high x 12" wide.

Hardy to zone 6.

<i>Corydalis flexuosa</i> ‘Blue Panda’

Long after other Corydalis have gone dormant for the summer, ‘Blue Panda’ will brighten your garden with vibrant, electric blue blooms above a tidy mound of filigree textured foliage. Tuck it under the upright, vigorous stems of Euphorbia x robbiae and the white flowering Viburnum ‘Chiquita’ for a striking vignette.

Blooms May–November.

Size: 10" high x 18" wide.

Hardy to zone 4.

<i>Corydalis flexuosa</i> ‘China Blue’

Imagine the bluest sky you have ever seen and you may come close to envisioning the flower color of this dazzling and vigorous cultivar. The glaucous leaves provide a lovely backdrop for the carefree clusters of spectacular blue flowers.

Blooms March–July

Size: 10" high x 18" wide.

Hardy to zone 4.

<i>Corydalis flexuosa</i> ‘Pere David’

Perhaps the most vigorous of the flexuosa, this graceful Corydalis spreads by underground stems, forming good-sized colonies of neat, low-mounding foliage adorned with bright blue flowers on willowy stems.

Blooms February–July

Size: 6" – 8" high x 18" wide.

Hardy to zone 4.

We have Hillier Nursery, a venerated UK mainstay, to thank for this valiant, repeat blooming Corydalis. Selected from a group of flexuosa seedlings, it hosts dazzling, large tubular flowers saturated with vibrant frosty-blue shades atop distinctive, fine-hewn, blue-green foliage that dons bronze tones. ‘Porcelain Blue’ provides additional enticements: the somewhat loosely arranged, easy-care clump doesn’t undergo a summer dormancy, plus its show-stopping sweetly scented racemes appear in spring and again in late summer, enchanting bees, hummingbirds and plant connoisseurs alike.

Blooms April–June & September

Size: 12" high x 18" wide.

Hardy to zone 5.

<i>Corydalis flexuosa</i> ‘Purple Leaf’

With an intriguing royal purple hue infusing each leaf, this low clumping species is the earliest blooming Corydalis we offer, bearing smoky periwinkle-blue flowers throughout the winter in our garden. The lovely leaf color holds best in partial shade.

Blooms November–May.

Size: 10" high x 18" wide.

Hardy to zone 4.

<i>Corydalis ochroleuca</i>

Native to rocky woods and naturalized upon old walls in Europe, this is one of the most beautiful foil plants for a shady garden. The lacy bluish green foliage and creamy white flowers, enhanced by green lips and yellow throats, add a delicate touch to crevices or steps. For more splendor, we combine this almost year-round bloomer with Campanula ‘Blue Waterfall’ and Brunnera ‘Hadspen Cream’.

Blooms June–October

Size: 18" high x 18" wide.

Hardy to zone 5.

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Current Staff's Favorite Plant

Current Staff's Favorite Plant

Our Featured Plant: Crocosmia ‘Zeal Tan’

Captivating Crocosmias, Plants that Dodge to Dog Days of Summer, 2020 T-shirst have arrived!

Captivating Crocosmias!

Crocosmias boast a bounty of late summer color as our gardens transition into autumn. Displayed on the ends of gracefully arching spikes above winsome sword-like leaves, the clustered tubular flowers range from yellow, peach and orange to fire-engine red. The prismatic tones meld well with white-flowering Hydrangeas and perennials such as Selinium wallichianum, Actaea simplex 'Atropurpurea', Alcea 'Polarstar' or Aster 'Bridal Veil'. The yellow and melon shades sparkle amid the blue blossoms of Aconitum, Caryopteris 'Longwood Blue', Perovskia 'Blue Steel' and  Aster 'Little Carlow'. For sizzling fun you could create a hot border, intermingling them with Kniphofia 'Bee's Sunset', Helenium 'Potter's Wheel' or Helianthemum 'Fire Dragon'. Be sure to add some to your next cut arrangement!

Commonly known as Montbretia, they do their best when provided with good drainage, moderate moisture and some protection from hot afternoon sun. Please feel free to check out our extensive collection of Crocosmia cultivars in the perennial section of our online catalog.

Dodge the Dog Days of summer….

with plants that pack a punch of blooms and alluring leaves at this time of year. By late August, our borders can look a tad tired and may be in need of some sprucing up. Adequate moisture and an additional application of compost will ensure late summer vitality. You can trim perennials, such as Nepetas and Geraniums, and savor their fresh new growth plus a flourish of blooms, often until the first frost! We hope some of the plants featured in this newsletter lift your spirits and maybe even inspire a little awe as summer wanes. 

All of us Digging Dog plant wranglers wish you Happy Digging and good health.

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