Plant Profiler

Eastern hemlock (Tsuga canadensis)

Eastern hemlock (Tsuga canadensis) Image
Synonyms / Common Names / Related Terms
α-phellandrene, α-pinene, β-phellandrene, β-pinene, bornyl acetate, camphene, Canada pitch, Canadian hemlock, catechin, epicatechin, flavan-3-ols, flavanols, hemlock bark, hemlock gum, hemlock spruce, hemlocktanne, limonene, myrcene, Pinaceae (family), Pinus bark, Pinus extract, proanthocyanidins, Pruche de l'est, tannin, terpinolene, tricyclene, Tsuga canadensis Carriere, Tsuga Canadensis, L.

Mechanism of Action


  • Constituents: Some volatile emissions of Eastern hemlock, Tsuga canadensis Carriere, have been identified as α-pinene, myrcene, tricyclene, camphene, α-phellandrene, β-pinene, limonene, β-phellandrene, terpinolene, and bornyl acetate; α-pinene, myrcene, and camphene comprised greater than 75% by mass of the total volatile release.1 Flavan-3-ols and flavanols, including catechin, epicatechin and proanthocyanidins, have been found in Eastern hemlock cells.2 According to secondary sources, Eastern hemlock bark also contains 10-13% tannin.


  • Insufficient available evidence.


  1. Broeckling, C. D. and Salom, S. M. Volatile emissions of eastern hemlock, Tsuga canadensis, and the influence of hemlock woolly adelgid. Phytochemistry 2003;62(2):175-180. 12482453
  2. Feucht, W., Treutter, D., and Polster, J. Flavanol binding of nuclei from tree species. Plant Cell Rep  2004;22(6):430-436. 14595514

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