logo Calflora, a 501c3 non-profit
Taxon  Report  
SIGN IN - REGISTER
Tsuga mertensiana  (Bong.) Carrière
Mountain hemlock
© 2022 Cynthia Powell
© 2018 Matt Berger
© 2018 Eric Waller
© 2015 Rob Littlepage
© 2021 Julie A. Kierstead
© 2012 Bob Case
© 2022 Cynthia Powell
© 2022 Cynthia Powell
© 2021 R.A. Chasey
© 2021 Mike Russler
© 2012 Julie A. Kierstead
© 2012 Julie A. Kierstead
© 2021 Julie A. Kierstead
© 2021 Mike Russler
© 2021 Mike Russler
© 2013 Ryan Kelly
© 2021 R.A. Chasey
Tsuga mertensiana is a tree that is native to California, and also found elsewhere in North America and beyond.
Siskiyou Del Norte Modoc Humboldt Shasta Lassen Trinity Plumas Tehama Butte Mendocino Glenn Sierra Yuba Lake Nevada Colusa Placer Sutter El Dorado Yolo Alpine Napa Sonoma Sacramento Mono Amador Solano Calaveras Tuolumne San Joaquin Marin Contra Costa Alameda Santa Cruz Mariposa Madera San Francisco San Mateo Merced Fresno Stanislaus Santa Clara Inyo San Benito Tulare Kings Monterey San Bernardino San Luis Obispo Kern Santa Barbara Ventura Los Angeles Riverside Orange San Diego Imperial
DJJJASONAFMM

Bloom Period
Genus: Tsuga
Family: Pinaceae  
Category: gymnosperm  
PLANTS group:Gymnosperm
Jepson eFlora section: gymnosperm

Wetlands: Occurs usually in non wetlands, occasionally in wetlands

Habitat: slopes

Communities: Subalpine Forest

Name Status:
Accepted by JEF + PLANTS + POWO
Alternate Names:
OTHERTsuga crassifolia
Information about  Tsuga mertensiana from other sources
Nursery availability from CNPLX
This plant is available commercially.
Jepson eFlora

USDA PLANTS Profile (TSME)

Photos on Calflora

Photos on CalPhotos

Google Images

Photos on iNaturalist

ID Tips on PlantID.net

[Wikipedia] Taxonomy: Mertensiana refers to Karl Heinrich Mertens (1796 - 1830), a German botanist who collected the first specimens as a member of a Russian expedition in 1826 - 1829. (link added by Mary Ann Machi)


Suggested Citation
Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals. [web application]. 2025. The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 03/28/2025).