Taxon

Tsuga heterophylla

 
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Tsuga heterophylla - western hemlock, Pacific hemlock, West Coast hemlock
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Common name: western hemlock, Pacific hemlock, West Coast hemlock
Family: Pinaceae
Distribution: Western North America
Habitat: Low to mid-elevation coastal forests
IUCN Red list: Least concern
Hardiness: Zone 6a -10 to -5 F
Life form: Evergreen conifer
Usage: Ornamental
Comments: Western hemlock, is a pyramidal needled evergreen tree of the pine family native to western North America. It features a narrow pyramidal crown that typically grows in cultivation to 70-150’ but may soar to as much as 250’ tall in the wild. It is the largest of the hemlock trees. Distinctive short, flat needles (1/4” to 3/4” long and to 1/16” wide) are shiny dark green with white rows beneath, usually flattened on the twig, with irregular and variable length. Cones are usually less than 1”, but grow to 1 1/8” long, with thin, rounded scales, and are pendulous (hang from the branch tips). Reddish-brown bark is up to 1.5” thick and develops deep scaly ridges.
Best grown in average, medium moisture, well-drained soils in part shade to full shade.
Links: OSU Landscape Plants - Tsuga heterophylla • Gymnosperm Database • Northwest Conifers

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