The diversity of tulip can provide unlimited options for the garden. Tulipa kaufmanniana, the water lily tulip are beautiful plants for the border. Tulips bloom from early spring into early summer and will make a color splash like no other flower. There are tulips from 6 inches to 1 and 1/2 ft. Usually early season bloomers are the Early Singles 12 to 15 inches tall flowering in mid-April and the early doubles that bloom by the end of April. Followed by Mendel and Triumph varieties. Then the Darwin and Parrots which are tall and beautiful. Tulips should be planted 4″ deep and 6″ apart.