Open, irregular-branched plant with fine bipinnate foliage and showy yellow flowers with long red stamens through most of the warm season. Seeds are toxic. Very xeric, need low water, full sun, well drained soil, hardy to 10°F. Can be trained to small tree. Deciduous, may be evergreen in warmer areas. Size: 5-10ft, spread 4-6ft; rapid growth. Leaves: bipinnate, 3-5in long, finely cut ferny appearance. Flowers: on branch terminals, informal racine of solid yellow flowers with long red stamens; bloom mainly in spring and early summer, then sporadically. Fruit: tan fuzzy pod, dehiscent, curled, persistent on branches unless removed.