Texas Bluebonnet Wildflower (annual) is also the Texas state flower. Steeped in folklore and legend as rich as the Lone Star State. Texas Bluebonnets may take time to establish and grow, but with the right conditions and patience, they are undoubtedly worth it! Blue and white flowers are densely arranged on a spike with a characteristic ice white terminal tip. Although they bloom in the early spring, seeds need to be planted in the fall (Sept 1-Nov 15) of the previous year to allow time for them to establish for spring flowers. Prefer sandy, loamy and well-draining soils; cannot tolerate poorly drained, clay-based soils. Require full sun.