Blue Moon is "re-writing the book" on this classic Southern flowering plant. It blooms like other wisteria, in early summer, but then it blooms again. If it is "happy" where it is growing, it will even bloom a third time! Takes a year or two to get established, then it is a very vigorous grower and if allowed to, it will extend 20' in either direction. Large, foot-long flower clusters are "showstoppers." Plant in full sun. Potted. Very hardy in Zones 5–9.