Fosteriana Tulips produce some of the largest flowers of the genus. Red Emperor' is a widely grown variety in this class. Fosteriana tulips are sometimes referred to as emperor tulips. Species Tulips include wild species, horticultural varieties, and hybrids. Most are early blooming, short-statured plants.
Species tulips are available in a wide array of colors.
They perennialize well and are excellent plants for rock and heirloom gardens. Mid-season flowering Darwin Hybrid Tulips are highly prized for their large, brilliant flowers. Flowers are available in shades of red, pink, orange, and yellow. Blooms are borne on strong stems which are up to 30 inches tall. Darwin hybrid tulips often bloom well for several years, making them one of the better perennial tulips.