Quercus Douglasii, or more commonly know as Blue Oak, is a tree with gray-green foliage and yellow flowers of the genus Quercus. It has a slow growth rate and a height of 60 feet at maturity. Its duration is perennial which means it will grow year after year. It's active growth period is spring, blooms during spring, is intolerant of shade and is routinely available commercially. Quercus Douglasii or Blue Oak's floral region is North America US Lower 48, specifically in the state of California.
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