Black Cottonwood - Sierra Club BC
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Black Cottonwood

CAN BE FOUND IN:

Black Cottonwood

Populus trichocarpa 

Appearance

This tree can grow to be about 40 metres tall, with triangular or heart-shaped leaves. The trunk becomes grey and has deep grooves when it gets older. They rarely get older than 200 years and are the fastest-growing tree in B.C. (up to two metres per year). 

Range & habitat

Black cottonwoods are common in wet areas, usually at low elevations. However, they will sometimes grow in wet subalpine areas. They don’t like shade but can survive flooding and frost. 

reciprocal relationships

Black cottonwood gets its name from their fluffy white seeds, which look like cotton. These seeds can be seen floating through the air in late spring. They are important trees for stream habitats. They stabilize river banks and provide shade. The leaves are a food source for aquatic insects. Twigs and buds are food for deer, moose, and elk. Beavers eat the bark and use stems for dams and woodpeckers nest in old trees. The bead-like fruit is smooth and green. 

The bark of cottonwood is also important for animals, like birds and squirrels to build their homes with. The tree buds have sticky resin, like glue, which bees use to seal their hives.  

Black cottonwood in the Southern Interior holds cultural significance to the Syilix Okanagan Peoples. It provides an important habitat for endangered species, and Okanagan communities have been working to restore these ecosystems. 

status

COSEWIC: Not Reported 
CDC: Yellow 

more information

If you belong to a First Nation with a story or piece of information not represented here and you would like to share more about this species, please email us at education@sierraclub.bc.ca

photo credit

Canva

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