Cassia is a large genus with some 500 species, among which are a number of highly attractive flowering trees, this is a medium to large tree with ovate, pointed leaflets; when these drop, usually in the dry season, masses of bright gold flower clusters appear on almost every branch. Cassia likes full sun and well-drained soil and to bloom profusely require a dry season. The "Golden Rain" tree is a spring and summer bloomer. Covered with sprays of drooping yellow flowers, it makes quite a show. A fast grower, use it anywhere you need some bright color.