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Mountain hemlock

Tsuga mertensiana

Last reviewed: August 2026

Mountain hemlock (Tsuga mertensiana)
Photo: (c) Jim Morefield, some rights reserved (CC BY-SA)

Light

part sun

Water

medium

Size

300"–1200" H × 120"–300" W

Bloom

Jun, Jul

Native to

CA, ID, MT, NV and 2 more states

Pollinators

wind-pollinated

Before you buy

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A graceful conifer with soft, bluish-green needles arranged evenly around the twig and a distinctive drooping leader that gives young trees a relaxed, elegant silhouette. It grows slowly at high, snowy elevations.

Wildlife value

Seed cones feed crossbills and squirrels, and the dense evergreen form offers cover through harsh mountain winters.

Common questions

How much sun does Mountain hemlock need?
Mountain hemlock grows best in part sun conditions.
When does Mountain hemlock bloom?
Mountain hemlock blooms in June and July.
Where is Mountain hemlock native?
Mountain hemlock (Tsuga mertensiana) is native to CA, ID, MT, NV and 2 more states, per vouchered herbarium specimen records and regional native plant society lists.
What pollinators does Mountain hemlock attract?
Mountain hemlock draws wind-pollinated.

Native range data from vouchered herbarium specimen records and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.

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