About

Black Cottonwood

The bark of Populus trichocarpa, commonly known as black cottonwood or western balsam poplar, is characterised by its smooth texture and light grey to greenish-grey colour when young. As the tree matures, the bark transforms into a distinctive dark grey or brownish-black hue.
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The Appearance

A large deciduous tree with a straight trunk and a broad, rounded crown. It has triangular, dark green leaves that turn yellow in autumn.


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The Produce

The capsules contain numerous small seeds and are arranged in hanging clusters.


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The Flowers

Produces long, pendulous catkins in spring, followed by fluffy, cotton-like seeds.


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The Leaves

The leaf margins are finely serrated, giving them a toothed appearance.


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The Bark

The bark is gray and deeply fissured, becoming more rugged with age.


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The Habitat

Prefers moist, well-drained soils and full sun. Commonly found along riverbanks and in wetlands.


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The Ecology

Provides habitat and food for various wildlife, including birds and mammals. The trees also help stabilize riverbanks.


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The Culture

Used for timber and pulpwood. Also valued in riparian restoration projects for its fast growth and soil stabilization properties.


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Fun Facts

Black Cottonwood is one of the fastest-growing trees in North America, making it valuable for timber production.


Explore Deeper With The Interactive Map

Unleash your inner explorer with our interactive map of the Arboretum. This live map labels the location of every tree in the arboretum, providing detailed information on each one.

Dive into the fascinating stories behind each tree, learn about their origins, characteristics, and unique attributes. The interactive map is your perfect companion for an engaging and educational adventure. Discover the rich tapestry of nature with just a few clicks!

Interactive Map

Arboretum Index

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