The redbud tree (Cercis canadensis) is a member of the bean family and is known as a Judas tree. Growing Redbud Trees: A Redbud Tree makes a bold landscape statement, with its irregular branching and glowing crown. Rosy pink flowers appear in April. Reddish-purple leaves change to dark green, then to yellow. Full sun or light shade needed. Partial shade preferred in windy, dry areas. Grows in a rounded, vase shape.