Siberian peashrub is an invasive species.
- Siberian peashrub fixes nitrogen and competes with native shrubs on woodland edges and savannas.
- It also growsin disturbed grasslands.
Siberian peashrub should be reported. The Minnesota Department of Natural Resources provides detailed recommendations for reporting invasive species.
How to identify Siberian peashrub
- Upright shrub or small tree, up to 18' high.
- Green when young, aging to a light brown; angular with small-tipped spines.
- Gray bark and narrow branching structure; young twigs are yellowish green.
Alternate, compound leaf with 8‒12 pairs of 2–4"-long elliptical leaflets.
- Fragrant, yellow, single, tubular and at the end of a stalk that grows from the leaf axil.
- Blooms May to June.
Fruit and seeds
- Smooth, brown, sharply pointed, 1–2"-long pods contain many seeds and ripen in July.
- Extensive root system which is useful for erosion control.
Reviewed in 2019