Corydalis

Corydalis
Plant Type
Sunlight Amount
''Berry Exciting' corydalis
Credit: Lynn Karlin
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''Berry Exciting' corydalis

Corydalis

Clusters of showy tubular blossoms and soft fernlike foliage make corydalis a standout plant for shade gardens. Its flowers appear in spring, then the plant virtually disappears (leaving room for summer bloomers) until the following spring. This plant adds a colorful, cascading component to containers and hanging baskets.

genus name
  • Corydalis
light
  • Part Sun
  • Shade
plant type
height
  • 1 to 3 feet
width
  • From 1 to 2 feet
flower color
foliage color
season features
problem solvers
special features
zones
  • 5
  • 6
  • 7
propagation

Colorful Combinations

Typically a soft shade of blue-green, the intricate, compound leaves of corydalis give the plant a soft, airy look that contrasts beautifully against shade plants with coarser textures, such as hostas. In spring and early summer, corydalis sports clusters of small, showy blossoms held above the foliage. The flowers' wide variety of colors, including creamy white, yellow, purple, pink, red, and blue, is somewhat unusual for shade-loving plants.

Corydalis Care Must-Knows

Corydalis grows best in humus-rich, consistently moist but well-drained soil. It also likes lightly sun-dappled conditions that resemble woodlands, especially in hot summer climates. South of Zone 7, this plant's growth may slow down or even stop. In the Pacific Northwest's cool summer climate, on the other hand, corydalis may bloom all summer long and well into fall. Too much shade results in lanky plants and sparse flowers. Letting corydalis sit in water risks rot.

Most corydalis species enthusiastically self-seed, sometimes almost to the point of being weedy. Young seedlings are easy to remove and transplant to more desirable spaces, though. Divide clumps every two to three years in the spring, but be aware that as corydalis gets older, it dislikes being disturbed.

More Varieties of Corydalis

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''Berry Exciting' corydalis
Credit: Lynn Karlin

'Berry Exciting' Corydalis

This variety of Corydalis has ferny golden leaves that set off the purple flowers. Hardy in Zones 5-9, it goes dormant in summer heat.

'Beth Evans' corydalis
Credit: Denny Schrock

'Beth Evans' Corydalis

Corydalis solida has beautiful bright pink blooms that soften to lighter pink with age on this tuberous variety. Zones 5-8.

'Blackberry Wine' corydalis
Credit: Lynn Karlin

'Blackberry Wine' Corydalis

This variety of Corydalis sports fragrant wine-purple tubular flowers from late spring through early summer, or longer in cool climates. Zones 5-8.

Blue corydalis
Credit: Justin Hancock

Blue Corydalis

Corydalis elata, at 16 inches in height in bloom, is taller than the other blue corydalis (C. flexuosa). Its cobalt blue blooms form a bit later and the plant is less likely to go dormant in summer. Zones 6-8.

'Blue Panda' blue corydalis
Credit: Mike Jensen

'Blue Panda' Blue Corydalis

Corydalis flexuosa, like other selections in the species, has elongated blue flowers with spurs in springtime. It dies down midsummer but reemerges for a fall encore. Its name is in reference to its origin in China. Zones 5-9.

Corydalis ochroleuca
Credit: Jeff McNamara

White Corydalis

Corydalis ochroleuca is native to rocky woodlands of Europe. It grows and self-seeds in rock walls and other well-drained sites in Zones 5-9. Milky white blooms with yellow throats are borne on blue-green ferny foliage.

Fumewort
Credit: Lynn Karlin

Fumewort

Sometimes called purple corydalis, Corydalis solida grows 6-12 inches tall and bears reddish-purple flower clusters in spring. Zones 4-8.

'Purple Leaf' corydalis
Credit: David McDonald

'Purple Leaf' Corydalis

Corydalis flexuosa emerges early in spring and bears clusters of blue flowers over purplish foliage. In warm weather regions, it will go dormant in summer. Zones 5-9.

'Snowstorm' fumewort
Credit: Justin Hancock

'Snowstorm' Fumewort

This variety of Corydalis solida is a white form of the species. It is native to Latvia. Zones 4-8.

Corydalis Companion Plants

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Credit: Matthew Benson

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Solomon's seal
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