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Western Hemlock (Tsuga heterophylla)

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Home « Washington « Kittitas « Tsuga « Tsuga heterophylla
Family: PINACEAE
Genus: Tsuga
Species: Western Hemlock (Tsuga heterophylla)

Western Hemlock Species Description

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This species is native to North America north of Mexico.

Allergenicity: No allergy has been reported for Western Hemlock (Tsuga heterophylla) species.

Pollination: Occurs in following seasons depending on latitude and elevation: Spring.

Gymnosperm: Any plant such as a conifer whose seeds are not enclosed in an ovary.

Tree: A large plant, not exactly defined, but typically over four meters in height, a single trunk which grows in girth with age and branches (which also grow in circumference with age).

Perennial: Living for many years.

Wetland Plant: Plants growing in aquatic or wetland habitats. These include all known floating, submerged, and emergent taxa, plus those that are found in permanently or seasonally wet habitats.

Woody Stem: Non-herbaceous. Lignified.

Evergreen: Retaining leaves throughout the year including changing seasons.

Western Hemlock Species Usage

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Western Hemlock Species Location

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The shaded areas on the map indicates where the species has been observed in the United States. Click the map to see a full scale version of these allergy areas.
  - Native, observed in a county
  - Introduced, observed in a county
  - Rarely observed
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