Small trees or large shrubs, sometimes up to 6m tall.

The catkins of this species are the first to emerge in the spring. The upper surface of the leaves are bright green, with the underside whitish. The twigs tend to be a dark reddish brown. Stipules often absent, but often large and persistent.

Prefers wet soils. Can be found along streams, lakes, and in wetlands.

This species will coppice well. It can also be used along smaller streams, because in its tree form will not entrench the channel. Roots system appears to be moderately deep. Grows well form cuttings. Common.