Handsome clumps of dainty divided leaves like those of bleeding heart (Dicentra, to which it is closely related) or maidenhair fern (Adiantum). Clusters of small, spurred flowers. Plant in rich, moist soil. Effective in rock crevices, in open woodland, near pool or streamside. Divided clumps or sow seed in spring or fall. Plants self-sow. Tend to be short lived in mild-winter zones.Corydalis lutea
Native to southern Europe. To 15 in. tall, 1 ft. wide. Masses of delicate foliage on many stems. Golden yellow, 3/4-in.-long, short-spurred flowers throughout summer. Self-sows and can become somewhat weedy.
Midseason to late. Full white plumes to 3 ft. tall.
Grows to 2 1/2–3 ft. tall and has maroon foliage and pinkish white flowers.
From the Pyrenees. Forms wide, 8–12-in.-tall mats composed of 1–1 1/2-in., soft gray green...