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Corydalis flexuosa

(Based on 1 user review)

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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11
Botanical Name: Corydalis flexuosa Genus: Corydalis
From late spring to summer, this species produces clusters of brilliant blue flowers over ferny foliage. It is the parent of many of the rapidly expanding selection of choice blue cultivars.
Noteworthy characteristics: The species and its cultivars usually bloom in spring and go dormant with the onset of summer's heat, and sometimes sprout again in autumn. 
Care: Prefers partial shade and moderately fertile, well-drained soil.
Propagation: Sow seed when fresh; germination may be erratic. Divide spring-flowering species in fall.
Problems: Downy mildew, rust, aphids, slugs, snails; spider mites indoors.
Height 6 in. to 12 in.
Spread 1 ft. to 3 ft.
Growth Habit Clumps
Growth Pace Moderate Grower
Light Full Sun to Part Shade
Moisture Medium Moisture
Maintenance Low
Characteristics Fragrant Flowers; Showy Flowers; Showy Foliage
Bloom Time Late Spring; Spring; Summer
Foliage Color Colorful/Burgundy Foliage
Flower Color Blue Flower
Uses Beds and Borders, Ground Covers, Specimen Plant/ Focal Point
Style Cottage Garden, Woodland Garden
Seasonal Interest Spring Interest, Fall Interest
Type Perennials

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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This choice corydalis produces fragrant clusters of periwinkle-blue flowers and ferny foliage infused with purple hues. It is similar to 'Blue Panda,' yet is slower to spread and blooms more reliably during the summer.

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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

The first of the coveted blue corydalises to be introduced, it produces fragrant clusters of long-spurred, azure flowers on a compact plant. 

Corydalis flexuosa 'China Blue' Corydalis flexuosa 'China Blue'
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This is one of the coveted blue corydalises. It produces whorled clusters of sky-blue flowers on 18-inch tall plants. 

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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This fragrant, blue-flowered species is more vigorous and heat tolerant than the blue cultivars. It blooms from late spring to early summer, and its foliage persists throughout the season with adequate moisture.

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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

'Forsyth Lemon Drop' is lovely and cheerful daylily cultivar.