General Plant Information (Edit)
Plant Habit: Tree
Life cycle: Perennial
Sun Requirements: Full Sun
Full Sun to Partial Shade
Partial or Dappled Shade
Water Preferences: Mesic
Minimum cold hardiness: Zone 5a -28.9 °C (-20 °F) to -26.1 °C (-15 °F)
Maximum recommended zone: Zone 8b
Plant Height: 50-90 feet
Leaves: Evergreen
Fruit: Edible to birds
Suitable Locations: Patio/Ornamental/Small Tree
Uses: Windbreak or Hedge
Provides winter interest
Erosion control
Shade Tree
Useful for timber production
Edible Parts: Fruit
Pollinators: Wind
Containers: Suitable in 3 gallon or larger
Conservation status: Least Concern (LC)

Conservation status:
Conservation status: Least Concern
Common names
  • Mountain Hemlock
  • Black Hemlock
  • Hemlock Spruce

Photo Gallery

Date: c. 1946
photo by Bert Huntoon from 'Arnoldia', December 13, 1946
Location: Mount Pilchuck State Park
photo credit: Walter Siegmund

credit: Walter Siegmund
Location: Mountain hemlock (Tsuga mertensiana) Desolation Wilderness Mount Tallac Trail
Date: 2010-08-10
Photo courtesy of: Miguel Vieira
Location: Cedarhome, Washington
Date: 2011-07-13
Location: Cedarhome, Washington
Date: 2011-05-17
Location: Wenatchee National Forest
photo credit: Walter Siegmund
This plant is tagged in:

  • Posted by Bonehead (Planet Earth - Zone 8b) on May 24, 2013 12:17 PM concerning plant:
    Native to high mountains from Alaska to the Sierra Nevadas, northern Idaho, and Montana. Per my native nursery owner, these have been severely poached in the wild. If you buy one, be sure there it has a USFS metal tag, which means it was harvested by permit. Extremely slow growing so a good focal point plant that won't get away from you. Good candidate for bonsai.

« Add a new plant to the database

« The Plants Database Front Page

Today's site banner is by ge1836 and is called "Tall Bearded Iris"

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.