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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|#8211;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|ndash;September

Size: 15" high x 15" wide.

Hardy to zone 4.

<i>Corydalis curviflora var.</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|#8211;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> ‘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.

<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.

Corydalis ochroleuca (P-0387)

Each $8.25

AVAILABLE SPRING 2020

<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|#8211;October

Size: 18" high x 18" wide.

Hardy to zone 5.

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Current Staff's Favorite Plant

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Our latest newsletter: Cercidiphyllum japonicum: A tree brimming with elegance; Autumnal Allure; Late Season Sale!

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One of the greatest joys of gardening is witnessing the changes that occur in our landscapes throughout the year, and many deciduous woody plants pretty much top the list for affording dynamic seasonal transformations, especially in autumn. Most of the trees and shrubs featured in this newsletter are renowned for both their handsome habits and prismatic fall displays. We’ve also included a few of our favorite perennials that lend late season floral or foliar intrigue.

All of us Digging Dog plant wranglers wish you Happy Digging!

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