Aruncus dioicus is a large showy plant with segmented, toothed leaves and large plumes of astilbe-like white flowers that can reach heights of 6' or more. The stems have a slight reddish tint to them making this an attractive plant even when not in bloom. The goat's beard is native to both coasts of North America, although some botanists consider the western variety a separate species.
Goats beard Aruncus dioeciousGoat's Beard (Aruncus dioicus) If you're a New England gardener looking for a large-impact shade perennial that blooms in early summer, you can't go wrong with Goat's Beard (Aruncus dioicus). Perfect for a partly-shaded woodland edge, its creamy white flowers are especially striking contrasted with a darker background:
Lewisia cotyledon ... Lewisia are native to western North America, and one of the most treasured rock garden plants. They form a low, fleshy rosette of tough evergreen leaves, bearing large star-shaped flowers in late spring and early summer.