Golden Wonder Senna
Previously included in Cassia and still often sold as such, these species have been reclassified as Senna—a move not accepted by all botanists. Grown for their lavish show of bright yellow, five-petaled flowers that look something like those of potentilla. Blossoms are followed by seedpods that may create litter; to reduce pod production, prune lightly after flowering. Rangy, rank growers should also be cut back periodically to encourage more compact growth. Good for screens, massing, and background plantings. Prefer well-drained soil.Senna splendida
Evergreen shrub, from Brazil. Open growth reaches 9–12 ft. tall and 6–10 ft. wide; habit varies from fairly upright to horizontal. Bright green leaves have four elliptical to oblong leaflets to 3 in. long. Loose clusters of 1/2-in. flowers appear at branch ends from autumn into winter. Heavy seed production. ‘Golden’ grows to 18 ft. tall and 15 ft. wide, with large golden-yellow blooms.
Native from the southern United States to Guatemala. In mildest climates, can be trained as a tree. Wh...
Evergreen shrub, from Brazil. Open growth reaches 9–12 ft. tall and 6–10 ft. wide; habit v...
Cold-hardy, shrubby plant with mounding habit (good in hanging baskets). Bracts are red, and yellow-ed...