Plant double late tulips in protected locations as the large flowers can be damaged by rain and strong winds. Viridiflora Tulips produce long-lasting flowers which have prominent green markings on their petals. The unusual flower characteristics make it a novelty item in the garden. Lily-flowering Tulips have long pointed petals which arch outward, the flowers somewhat resembling a lily. Flower colors include white, pink, red, yellow, and purple.
Several varieties have petals edged or feathered in contrasting colors.
Plants grow to a height of 20 to 30 inches. Fringed Tulips have flowers with elegant fringed petals. Many varieties are mutants of single late tulips. The white, yellow, or red petals are striped with red, bronze, or purple. The unusual markings were actually caused by a virus.