Rain Lilies_Zephyranthes candida - Rain lilies are late summer blooming bulbs common across the southeastern states. The rain lilies (Zephyranthes candida) were just one of the thousands of plants he grew in his 50-acre garden near Calion (Union County), just north of El Dorado. This rain lily, a member of the amaryllis family and native to South America, produces foot long, slick, green, rush-like leaves from thumb-size bulbs. During the heat of late summer, especially after a summertime cloudburst, solitary white, funnel-shaped blooms appear. The blooms remain open for three days or so, but new ones will appear over the next month, seemingly at the whim of the plant.