Tsuga Mertensiana, or more commonly know as Mountain Hemlock, is a tree with green foliage and yellow flowers of the genus Tsuga. It has a slow growth rate and a height of 125 feet at maturity. Its duration is perennial which means it will grow year after year. It's active growth period is summer, blooms during early summer, is tolerant of shade and is routinely available commercially. Tsuga Mertensiana or Mountain Hemlock's floral region is North America US Lower 48 and Alaska, specifically in the states of Alaska, California, Idaho, Montana, Nevada, Oregon and Washington.
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