Montana Goldenpea (Thermopsis montana) is also known as Mountain Goldenbanner, Montana Bushpea, Yellow Pea, Buffalo Pea, Buckbean, or False Lupine. It is native to Western North America, and grows in wet and dry conditions, as well as in sandy or rocky soil. It spreads via rhizomes and by seed. The slender stems are purplish with a white coating, slightly branched above, and bear three-parted leaves. Yellow, lupine-like flowers occur in dense to interrupted clusters 4-12 in. long. Flowers are followed by velvety pods that turn black in the Fall when the seed is ripe. Fun fact, the flowers are especially attractive to bumblebees.
Life Cycle: Perennial
Solar Exposure: Full sun
Bloom Color: Yellow
Bloom Time: May through August
USDA PLANTS Database Link