Blue cohosh (Caulophyllum thalictroides) kawl-oh-FIL-lum thah-lik-TROY-deez Genus:  Caulophyllum

This plant's three-lobed, veined leaves are dark purple when they emerge and later turn green. Greenish brown or yellowish brown flowers appear in mid- and late spring, turning into waxy blue berries that dangle beneath the leaves.

Noteworthy Characteristics: 

Berries split open to reveal berry-like seeds that turn from green to blue. Very slow to increase in size.

Care: 

Grow in moist, humus-rich, acidic soil, in part to full shade in a woodland setting.

Propagation: 

Divide in spring while dormant or after blooming. Sow seeds in containers in an open frame; germination is slow and erratic.

Problems: 

Fungal spots sometimes occur.

Overview

Height 1 ft. to 3 ft. Spread 6 in. to 12 in. Growth Habit Clumps Growth Pace Slow Grower Light Part Shade to Full Shade Moisture Medium Moisture Characteristics Attracts Song Birds, Showy Fruit Bloom Time Late Spring, Spring Flower Color Brown, Green, Yellow Style Woodland Garden Seasonal Interest Spring Interest Type Perennials