Plant · GBIF taxon 2687210
Western Hemlock
Tsuga heterophyllaAlso known as Pacific Hemlock, Western Hemlock-Spruce
Western hemlocks dominate the dense, mossy rainforests of the Pacific Northwest, easily recognized by their gracefully drooping top branches and flat, feathery sprays of needles. These massive conifers are exceptionally shade-tolerant, allowing seedlings to sprout on decaying nurse logs and grow slowly beneath a closed canopy for decades. Over centuries, they shape the forest structure, providing vital nesting habitat for northern spotted owls and winter shelter for herds of elk.
ConiferEvergreenShade-Tolerant
—observations
—countries
—peak records
Least ConcernConservation statusIUCN Red List categoriesLCNTVUENCREWEXLeast ConcernRed List categories, explained →
Diet & prey
- Sunlight
- Water
- Soil nutrients
Predators
- Hemlock woolly adelgid
- Black-tailed deer
- Porcupines
ThreatsLogging, hemlock dwarf mistletoe, hemlock woolly adelgid, climate change
HabitatsTemperate rainforests, moist coastal forests, montane valleys
Life span400 to 1200 years
Size / weightNot available
Classification
- FamilyPinaceae
- SpeciesTsuga heterophylla
Range data is not available yet.
Interaction riskLow
- Low
- Moderate
- High
- Very high
- Why interaction risk is low
- Safe to observe at a normal distance.
Responsible observation
- Identify by needles: Look for flat, glossy green needles of highly variable lengths arranged in flat sprays.
- Check the leader: Look at the very top of the tree, which characteristically droops like a whip.
- Examine the cones: Search the ground for tiny, egg-shaped woody cones measuring only two centimeters long.
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