Wisteria macrostachya 'Blue Moon'

Kentucky wisteria (Wisteria macrostachya), the hardiest of the wisterias, greets visitors to the Bulb Garden with pendant racemes of lilac-blue flowers. Wisteria grows to 25 feet and requires proper pruning for the maximum number of flowers. It is a recommended alternative to Chinese wisteria (W. sinensis), which is on the watch list for potentially invasive species.