Corydalis 'Canary Feathers'

‘Canary Feathers’ is a hybrid Corydalis with feathery foliage and clear yellow tubular flowers. The breeder lists a long May-to-September flowering season, a compact clumping habit, and heat tolerance, making it useful for shaded borders and containers. ## Size and growing conditions The [Terra Nova cultivar profile](https://www.terranovanurseries.com/product/corydalis-canary-feathers/) lists a mature size of about 9 in high and 12 in wide, USDA zones 6–9, and part shade to full shade. It prefers evenly moist, well-drained soil. The breeder describes green foliage in its profile fields and blue-green leaves in its cultivar notes, so foliage color can read differently with light and growing conditions. ## Identity and flowering The exact selection is Corydalis ‘Canary Feathers’; its patent describes it as a hybrid between C. moorcroftiana and C. wilsonii. The [U.S. patent record](https://patents.justia.com/patent/PP18909) confirms patent PP18909 and the June 10, 2008 patent date, while Terra Nova also lists EU24249. These records verify identifiers only; they do not establish current legal status. ## Maintenance Keep the root zone evenly moist without leaving the plant in standing water. Use part or full shade in warmer sites, and allow the clump to fill its space before dividing or moving it.