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Corydalis curviflora var. rosthornii 'Heronswood Form'

Corydalis curviflora var. rosthornii 'Heronswood Form' Photo/Illustration: Marietta O'Byrne


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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11
Botanical Name: Corydalis curviflora var. rosthornii 'Heronswood Form' Genus: Corydalis
This variety has fragrant, deep blue, cornucopia-shaped flowers carried tightly on red stems above 6-inch tall, blue-green foliage. It is considered one of the best blue forms for color and performance.
 Care: Prefers partial shade in moist, well-drained soil. It goes dormant in high temperatures.
 Propagation: Sow seed when fresh; germination may be erratic. Divide in fall.
 Problems: Downy mildew, rust, aphids, slugs, snails; spider mites indoors.
Height 6 in. to 12 in.
Spread 6 in. to 12 in.
Growth Habit Clumps
Growth Pace Moderate Grower
Light Part Shade Only
Moisture Medium Moisture
Maintenance Low
Characteristics Fragrant Flowers; Showy Flowers; Showy Foliage
Bloom Time Early Spring; Early Summer; Late Spring; Spring; Summer
Flower Color Blue Flower
Uses , Beds and Borders, Ground Covers, Naturalizing, Specimen Plant/ Focal Point
Style , Cottage Garden, Woodland Garden
Seasonal Interest , Spring Interest, Summer Interest
Type ,Perennials

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