Rain Lily is a small treasure native to various habitats in the Americas including Argentina, Uruquay, the high elevations of Mexico and parts of the United States. The plant’s elegant name, zephyranthes, means “flower of the west wind” and is an illusion to the phenomenon which would occur in Argentina and Uruguay when during the late summer a west wind bringing rain would cause the lilies to begin to bloom. Most species are tropical and only hardy in Zones 9-10. Some wild plants from the higher elevations are hardy to Zone 5. This Buls is available in the spring.