Colutea arborescens is a shrub to 4 m tall, multiple stems; roots harbor nitrogen fixing bacteria (USDA, NRCS 2006).
Leaves pinnately compound, leaflets 7-13, to 3 cm long, oval to widest above middle, tip blunt to notched, surface often dull gray-green, pale below.
Flowers yellow, with red markings, showy, to 2 cm long, pea-flower-shaped, in unbranched, long-stalked clusters of 2-8, June-Sept.
Fruit dry, thin-walled, egg-shaped pods, to 8 long, 3 cm wide.
Wetland status: NL.
Frequency in NYC: Very infrequent.
Origin: S. Europe, N. Africa.
Habitat: Very infrequently escaped from cultivation. Prefers or tolerates soil pH 6-8.5; Very tolerant of drought, somewhat tolerant of shade, intolerant of salt (USDA, NRCS 2006).