Senna mexicana var. chapmanii, known as Bahama senna, is native to South Florida, the Bahamas and Cuba. It is a small shrub to 6 feet tall with yellow flowers nearly all year. Bahama senna is a larval host plant for several butterflies, including the orange-barred sulphur, sleepy orange sulphur and cloudless sulphur. It grows best in full sun to light shade. Bahama senna is a wonderful choice for all butterfly gardens. We have examples of this species growing in our butterfly garden.