Invasive Species | Siberian Peashrub

It is difficult to fully eradicate invasive species once they are widespread on a landscape which is why Early Detection and Rapid Response (EDRR) is a vital component of invasive species management. TCWP conducts an extensive EDRR program each year treating and monitoring hundreds of locations with small infestations and effectively eradicating many of them. To conduct and effective EDRR program, we must be on the lookout for potential invasive species. One such species is Siberian peashrub. This species has been identified in several locations in Teton County. It is known to be invasive in the Midwest, but it is not known if it will spread in our environment. Siberian peashrub, as its name implies, is a shrub or small tree. It has compound leaves, and, while the leaflets are arranged opposite one another, the leaves are alternate on the stem. It may have sharp, stiff stipules. This plant produces yellow pea flowers in the spring that turn into 1-2-inch-long peapods. Because it spreads by both seeds and roots, it is often found in large stands or hedgerows. We are seeking presence data on this species, including plants located in landscapes and those in wild/natural areas. To report this species, use EDDMaps (, email, or use our online form ( Please include a location (latitude and longitude) or send photo with identifiable items (building or other structure, road, etc.).

Thank you for helping us manage invasive species in Teton County!

Photo credits:
Seedpod Photo: Robert Vidéki, Doronicum Kft.,
Flower: Bonsack Hammeraas, NIBIO – The Norwegian Institute of Bioeconomy Research,
Leaflets: Jamie Nielsen, University of Alaska Fairbanks, Cooperative Extension Service,