Corydalis sempervirens.
Pale Corydalis, also known as Rock Harlequin, is an annual or biennial wildflower native to the eastern and midwestern United States where it can often be found growing in the rocky, sandy soils in forest openings and alongside the banks of lakes and rivers.
Plant grows to around 3 feet in height and produces tubular, light to dark pink flowers with bright yellow tips that bloom from May through September.
Listed as endangered or threatened in several states, so planting it in your home garden will help to maintain a healthy ecosystem!
Pale Corydalis
Growth Chart
Hardiness Zones: 4 to 9 Light Requirement: Full to partial sun Soil Type: Rocky, sandy Sow Depth: 1/8 inch Plant Spacing: 18 to 24 inches Germination Note: Cold stratification required Stratification Time: 30 days Bloom Time: May through September Growing Tips
Direct sow in late fall by planting the seeds just below the soil's surface. For earlier planting, mix seeds with moist sand and store in the refrigerator for 30 days (cold stratification) before direct sowing.
A Note on Cold Stratification
These seeds require cold, moist stratification. To naturally stratify the seeds, plant outdoors late fall on a weed-free site and allow seeds to overwinter.
To artificially stratify the seeds, place the seeds and a moist medium (such as a damp paper towel, coffee filter, sand, or vermiculite) in a labeled, sealed plastic bag and store in a refrigerator (33-40°F) for the amount of time noted on the growth chart before sowing.