Tulipa 'Hakuun' - Mid-spring blooming Darwin Hybrid tulip bulb that is pure white and then opens with just a hint of cream on the sepals. Tulip Hakuun force well, is very reliable, has long-lasting flowers and is considered a long term perennial. Like all tulipa, tulip bulbs are from the Liliaceae family. This fall planted tulip bulb requires full sun and average soil. Tulip Hakuun blooms 16"-20" tall and is good for winter hardiness zones 3-9.