Mountain Hemlock Tsuga mertensiana

Detailed Listing For
Botanical Name:

Tsuga mertensiana







Common Name:

Mountain Hemlock

60-120 feet
Minimum Hardiness Zone:

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  • Tsuga mertensiana

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Growing Info, follow in order:
Scarification: Soak in water, let stand in water for 24 hours.
Stratification: cold stratify for 90 days.
Germination: sow seed 1/8" deep, tamp the soil, keep moist, mulch the seed bed, remove mulch upon germination, cover seedbed with some shade.
In a Nutshell:
* It is a large evergreen coniferous tree growing to 20–40 m tall, exceptionally 59 m, and with a trunk diameter of up to 2 m. The bark is thin and square-cracked or furrowed, and gray in color. The crown is a neat slender conic shape in young trees with a tilted or drooping lead shoot, becoming cylindric in older trees. At all ages, it is distinguished by the slightly pendulous branchlet tips. The shoots are orange-brown, with dense pubescence about 1 mm long. more...
* Mountain hemlock (Tsuga mertensiana) is usually found on cold, snowy subalpine sites where it grows slowly, sometimes attaining more than 800 years in age. Arborescent individuals that have narrowly conical crowns until old age (300 to 400 years) and shrubby krummholz on cold, windy sites near timberline add beauty to mountain landscapes. Taylor and Taylor (76) thoroughly describe its form. Uses of its moderately strong, light-colored wood include small-dimension lumber and pulp. more...
* The wood of Tsuga mertensiana is somewhat inferior to that of T. heterophylla as timber and as pulp, a fact that has little retarded extensive logging of subalpine forests. It is adaptable to a wide variety of climatic conditions and is widely used as an ornamental (Burns & Honkala 1990) (USDA hardiness zone 5). In this capacity it differs from many alpine conifers in its tolerance of relatively warm, damp environments, and in such settings remains healthy while growing slowly, ideal characteristics for an ornamental conifer. more...