Fauna
Plant

Western Hemlock

Tsuga heterophylla

Also known as Western Hemlock-Spruce, Pacific Hemlock

Dominating the lush canopy of the Pacific Northwest, western hemlock flourishes in cool, damp coastal temperate rainforests. Young saplings frequently sprout atop decaying nurse logs, using the elevated rotting wood to establish roots above the dense forest floor. Delicate feathery needles feature two white lines of stomata underneath, giving the dense foliage a silvery sheen.

EvergreenConiferOld-Growth
Western Hemlock reference1 / 7
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Least ConcernConservation statusIUCN Red List categoriesLCNTVUENCREWEXLeast ConcernRed List categories, explained →
Key facts
Diet & preyAutotrophic (Photosynthesis)
ThreatsDeforestation, Hemlock Woolly Adelgid, Wildfire
HabitatsTemperate Rainforests, Coastal Conifer Forests
Life span400–1200 years
Classification
  1. OrderPinales
  2. FamilyPinaceae
  3. GenusTsuga
  4. SpeciesTsuga heterophylla
Range & activity
Range data is not available yet.
Safe observation
Interaction riskLow
  1. Low
  2. Moderate
  3. High
  4. Very high
Why interaction risk is low
Safe to observe at a normal distance.
Responsible observation
  • Bark and Foliage: Look for small, egg-shaped cones hanging at branch tips and distinct drooping lead shoots.
  • Habitat Spotting: Search rotting nurse logs on the forest floor to find lines of young seedlings growing in a row.
  • Distinction: Remember that coniferous hemlock trees are entirely unrelated to toxic poison hemlock plants.
Related species
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