Cooper’s vetch is ranked S1 (critically imperiled) in Manitoba. It prefers well-drained, loamy soils and is often found on oak ridges that see periodic disturbances, such as fire, that keep shrubby competition in check. Plants look remarkably similar to Canada milkvetch until the seed pods form. When the fruits appear in August, Cooper’s milkvetch is easily distinguished by its striking clusters of large inflated pods that are a beautiful pale yellow blushed with red.
Flower Colour: white
Sun Exposure: full sun to part shade
Bloom Period: July
Height: 1 – 3 ft
Soil: dry – moist