Terrestrial invasive species

Nature

Most of these invasive plant factsheets are created from the booklet Minnesota invasive non-native terrestrial plants, an identification guide for resource managers.

Check the additional resources and herbicides table for more information.


Siberian peashrub (Caragana arborescens)


 

Description:

Appearance: Upright shrub or small tree, up to 18' high. Narrow branching, gray bark and branches; young twigs, yellowish-green.

Leaves: Alternate, compound, 2- 4" long consisting of 8 -12 pairs of leaflets; leaflets elliptic.

Flowers: Yellow, single, tubular, at the end of a stalk that grows from the leaf axil; blooms in May - June.

Fruit: Pods 1- 2" long, sharply pointed, brown and smooth.

Ecological Threat:

  • It invades savanna and woodland edge environments It invades savanna and woodland edge environments where it competes with native shrubs. Invades disturbed grasslands as well.
  • It is still sold as an ornamental and for shelterbelt and wildlife plantings.
  • It is native to Siberia and Manchuria.

 

Control Methods:

Mechanical
Repeated prescribed burning, it will stump sprout but be weakened eventually

Pulling

Chemical
Cut-stump treatment with glyphosate; cut-stump or basal bark spray treatment around the stem with triclopyr

 

Native Substitutes:

Additional Resources