This is Senna multiglandulosa, also known as buttercup bush. Growing up to 12 feet tall this plant lives to live in full sun.The root stems and leaves can be used as dye. The flowers can be used in stews. Branches from this shrub can be used to make baskets. From late Winter to early Fall this plant has bright yellow blossoms. USDA Hardiness Zones 8 to 11.