Wisteria macrostachya Blue Moon
Wisteria 'Blue Moon' photo courtesy of Doreen Wynja Monrovia
Kentucky Wisteria

Wisteria 'Blue Moon' is the hardiest of the wisterias for our area. It has bloomed reliably in our garden for many years where it completely covers a large metal arbour.  It produces long racemes of fragrant, pea-like, lavender blue flowers that bloom in June putting on a spectacular floral display.  Flowers give way to pendant, velvety, bean-like seed pods (4-5” long) which ripen in autumn and may persist into winter. 

  • Height: 4.6-7.6 m (15-25 ft)
  • Spread: 1.2-2.44 m (4-8 ft)
  • Cold Hardiness: Zone 4-8
  • Sun or Shade: minimum four hours of direct sun
  • Bloom Time: June
  • Leaf Colour: green
  • Bloom Colour: lavender blue
  • Critter Resistance: deer
  • Nature Attraction: bees

Growing and Maintenance Tips

In order to bloom well, wisteria requires full sun (six or more hours of direct sun per day) and a deep, moderately fertile, moist soil that does not dry out excessively. It will adapt to most soils, though it prefers a neutral to slightly acid soil. Some type of solid support will be necessary as mature plants can be very heavy. Most vines will produce flowers by the second or third year after planting, but it may take longer. Pruning for this wisteria should be kept to a minimum (e.g., pruning back tips after bloom or in winter). Improper pruning may overly stimulate vegetative growth at the expense of flowers. 

 

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