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Mountain Hemlock*

Tsuga mertensiana

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Mountain Hemlock (Tsuga mertensiana) at Squak Mountain Nursery

Mountain Hemlock

Mountain Hemlock

(Photo courtesy of NetPS Plant Finder)

* This is a "special order" plant - contact store for details

Height:  90 feet

Spread:  40 feet

Sunlight:  full sun  partial shade  full shade 

Hardiness Zone:  4

Description:

A stately and beautiful conifer of the Pacific northwest mountains, with soft needles and an open habit of growth, upright and broadly conical; needs adequate moisture, rich, acidic and organic soils and shelter from drying winds

Ornamental Features

Mountain Hemlock has bluish-green foliage with powder blue undersides which emerges light green in spring. The glossy needles remain bluish-green throughout the winter. The flowers are not ornamentally significant. The brick red fruits are held in cones in mid fall.

Landscape Attributes

Mountain Hemlock is an evergreen tree with a strong central leader and a distinctive and refined pyramidal form. It lends an extremely fine and delicate texture to the landscape composition which can make it a great accent feature on this basis alone.

This tree will require occasional maintenance and upkeep, and is best pruned in late winter once the threat of extreme cold has passed. Gardeners should be aware of the following characteristic(s) that may warrant special consideration;

  • Insects

Mountain Hemlock is recommended for the following landscape applications;

  • Vertical Accent
  • Windbreaks and Shelterbelts

Planting & Growing

Mountain Hemlock will grow to be about 90 feet tall at maturity, with a spread of 40 feet. It has a low canopy with a typical clearance of 3 feet from the ground, and should not be planted underneath power lines. It grows at a medium rate, and under ideal conditions can be expected to live for 70 years or more.

This tree performs well in both full sun and full shade. It does best in average to evenly moist conditions, but will not tolerate standing water. It is particular about its soil conditions, with a strong preference for rich, acidic soils. It is quite intolerant of urban pollution, therefore inner city or urban streetside plantings are best avoided, and will benefit from being planted in a relatively sheltered location. Consider applying a thick mulch around the root zone in winter to protect it in exposed locations or colder microclimates. This species is native to parts of North America.

 

* This is a "special order" plant - contact store for details

 
 
Hardiness Zone Plant Height Minimum Sunlight Soil pH Preference
Characteristics
Articulation  Windbreak 
Applications
Fruit  Texture  Plant Form  Winter Value 
Ornamental Features

Disclaimer - This Plant Finder tool is an online resource representing many of the varieties that we carry over the course of the season, and is intended for informational purposes only. Inventory varies seasonally, so we cannot guarantee that every plant will be in stock at all times - please contact the store directly for availability. It does not include our entire inventory of plants, so be sure to visit our store to see varieties that may not be represented on this list.