SWAINSONPEA - Sphaerophysa salsula (Pall.) DC.

Fabaceae - (Pea family)

Swainsonpea is a creeping perennial reproducing by seeds and lateral roots. Leaves are compound, composed of numerous opposite leaflets which are oval and covered with hair. Flowers occur from May to July, are 1/4 to 1 inch in length and are orange-red. Many seeds are formed in bladder-like translucent pods. Seeds are green with an attachment indentation.

This plant was introduced from Asia and is commonly found in some western states along roadsides and fences. It is a potential threat to alfalfa seed producing areas; the seed is a contaminant in alfalfa seed which is the same size, shape and weight, making it impossible to separate.

(Courtesy of Weeds of the West)

Control Strategies coming soon.

NOTE: All Pesticide application recommendations are based on label directions and experience with these products in Fremont County Wyoming. However, labels change from time to time. Ultimately it is the responsibility of the applicator to insure the pesticide application is made within the directions on the current product label. If you are unsure of, or have questions concerning treatment method or a chemical usage please consult your local Weed & Pest office, or a licensed professional.