Wisteria macrostachya ‘Blue Moon’

Wisteria macrostachya, sometimes commonly called Kentucky wisteria, is a deciduous vine that is native to the southcentral U.S., ranging from Louisiana and Texas north to Kentucky, Illinois, Missouri and Oklahoma. It is very similar in appearance to Wisteria frutescens, American wisteria, and was once designated as W. frutescens var. macrostachya, but is noted by some as having a longer inflorescence. It is a less aggressive grower than some of the other wisterias, but is well noted for its excellent winter hardiness and ability to produce flowers in USDA Zones 3-4.  ‘Blue Moon’ may bloom up to three times in a growing season once established, producing beautiful, foot-long racemes of fragrant, pea-like lavender-blue flowers.