SelecTree: Tree Detail

WESTERN HEMLOCK
Tsuga heterophylla

Tsuga heterophylla Tsuga heterophylla Tsuga heterophylla Tsuga heterophylla Tsuga heterophylla Tsuga heterophylla Tsuga heterophylla Tsuga heterophylla Tsuga heterophylla Tsuga heterophylla

Photo Locations: Hoyt Arboretum - Portland, OR and Finch Arboretum - Spokane, WA

General Notes

Needs ample moisture.

Has fragrant Leaf.

Native to Western North America.

A Tsuga heterophylla in Northern California is registered as a California Big Tree. It measures 272 feet high, with a trunk circumference of 238 inches and a crown spread of 40 feet.

Family: Pinaceae

Tree Characteristics

Erect and requires ample growing space.

Conical Shape.

Has Evergreen foliage.

Height: 70 - 130 feet.

Width: 20 - 30 feet.

Growth Rate: 24 to 36 Inches per Year.

Longevity Greater than 150 years.

Leaves Needle, No Change, Evergreen.

Flowers Inconspicuous. Flowers in Spring. Has separate male and female flowers on the same tree (monoecious).

Brown Cone, Medium (0.50 - 1.50 inches), fruiting in Summer or Fall.

Bark Dark Gray, Light Gray or Red Brown, Furrowed or Scaly.

Shading Capacity Rated as Dense in Leaf.

Litter Issue is Dry Fruit.

Tree Site Conditions & Constraints

Sunset Zones 2 - 7 and 14 - 17.

USDA Hardiness Zones 6 - 8.

Exposure Full Sun to Full Shade.

Moist Soil.

Loam Texture.

Highly Acidic to Neutral Soil pH.

Seaside Tolerance is Good in Mild Zone.

Pests & Disease Information

Susceptible to Beetle Borers, Caterpillars and Scales, Armillaria, Phytophthora and Root Rot.

Health, Safety & Environmental Concerns

Branch Strength Rated as Strong.

Root Damage Potential Rated as Moderate.

Allergy Health Hazard.

Biogenic Emissions considered Moderate.

Fire Resistance is Unfavorable.

Desirable Wildlife Plant.

Attracts Birds and Squirrels.

Special Uses & Values

Hedged.

Cite this tree:
SelecTree. "Tsuga heterophylla Tree Record." 1995-2020. Jul 11, 2020.
< https://selectree.calpoly.edu/tree-detail/tsuga-heterophylla >

This tree is not part of the SelecTree Nursery Connection. If you would like to see this tree listed, or know of a nursery that sells it, please contact us at ufei@calpoly.edu.