Salix Prolixa, or more commonly know as Mackenzie's Willow, is a tree shrub with green foliage and white flowers of the genus Salix. It has a moderate growth rate and a height of 45 feet at maturity. Its duration is perennial which means it will grow year after year. It's active growth period is spring and summer, blooms during early spring and is intolerant of shade. Salix Prolixa or Mackenzie's Willow's floral region is North America US Lower 48 and Alaska
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