Papaveraceae
Corydalis caseana subsp. cusickii
Corydalis caseana subsp. cusickii
Also known as Corydalis caseana var. cusickii, Capnoides cusickii, Corydalis cusickii
Flowering Plants · Native Plants · Corydalis · Woodland Perennial · Shade Plant · Pacific Northwest · Native · Rare · Rock Garden · Spurred Flowers · Papaveraceae · Collector Plant
Cusick's corydalis is a rare native perennial best suited to cool, moist woodland or streamside conditions in Pacific Northwest gardens. It requires consistently moist, humus-rich soil with excellent drainage and does not tolerate heat or drought. This specialist plant rewards patient gardeners with delicate spurred flowers in shaded rock or woodland garden settings.
Growing conditions
The details behind the basics
- Daily light
- 3 hours
- Watering
- Keep soil consistently moist but never waterlogged; water at the base to avoid crown rot · Every 4-6 days during active growth
- Maintenance
- High
- Soil
- loam
- Soil pH
- 5–7.4
- Temperature
- -20°F to 90°F
- Cycle
- Perennial
Hardiness
USDA 5a-9b
Form & growth
Mature size and habit
- Mature height
- 18 in – 3 ft
- Spread
- 2 ft
- Spacing
- 12 in apart
- Growth rate
- Moderate
- Root depth
- Medium
- Flowers
- Yes
- Foliage
- Coarse
Ecology & origin
Where it belongs and what it brings
- Native to
- Idaho, Oregon
- Attracts
- Bees, Hummingbirds
Sources: trefle, usda
More Corydalis
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Yellow harlequin
Corydalis flavula
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Corydalis caseana subsp. hastata
Corydalis caseana subsp. hastata
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Corydalis caseana subsp. brandegeei
Corydalis caseana subsp. brandegeei
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Corydalis caseana subsp. caseana
Corydalis caseana subsp. caseana
Partial Shade · Moderate · Moderate
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