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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.

small Siberian peashrub growing in the woods

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.
close up of long red, pod like Siberian pea pods
Siberian peashrub leaves
close up of yellow Siberian peashrub flowers
Siberian peashrub flowers

 

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

Reviewed in 2019

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