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Siberian peshrub

Quick facts

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. 

Stem

  • Green when young, aging to a light brown; angular with small-tipped spines.

Branches

  • Gray bark and narrow branching structure; young twigs are yellowish green.

Leaves

  • Alternate, compound leaf with 8‒12 pairs of 2–4"-long elliptical leaflets.

Flowers

  • 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.

Roots

  • Extensive root system which is useful for erosion control.
Siberian peashrub leaves
Siberian peashrub flowers

 

Angela Gupta, Extension educator; Amy Rager, Extension educator; Megan M. Weber, Extension educator

Reviewed in 2019

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