Tulip Darwin Hybrid Mix - 10 flower bulbs Unlike many other tulips, Darwin Hybrids will multiply, returning year after year! Plant in the fall for blooms in mid-spring; Hardy in zones 3-8 (warmer zones should refrigerate bulbs first) You'll receive 10 Extra Large Darwin Tulip Bulbs, size 12+ cm Plant in full sun or Partial Shade; Grows to a height of 18"-24" Immediate Shipping