Rock Harlequin
Corydalis sempervirens
Last reviewed: June 2026
Light
part sun
Water
low
Size
8"–24" H × 4"–12" W
Bloom
May, Jun, Jul
Native to
PA
Pollinators
bees, hummingbirds
Rock harlequin is a delicate biennial wildflower that produces clusters of small pink and yellow tubular flowers from late spring through summer. This compact native plant forms neat clumps with finely divided, blue-green foliage that creates an airy, fern-like texture in the garden.
In an HOA neighborhood
Rock Harlequin takes more care to keep looking intentional in a front yard. Maintenance level: moderate. Consider it for backyard or mid-zone beds rather than the street edge.
Works well in: backyard only.
- Biennial lifecycle creates gaps in plantings
- Can appear weedy or wild to conventional gardeners
- May self-seed unpredictably
Wildlife value
The tubular flowers attract bees and hummingbirds during its long blooming period from May through July. It provides habitat value for local pollinators.
Native range data from the USDA PLANTS Database and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
Does Rock Harlequin fit your yard? Open it in Pollinator Patch to check it against your sun, soil, and HOA-conscious filters.