Potentilla fruticosa, commonly known as Cinquefoil, is a compact, bushy deciduous shrub boasting masses of large, rich yellow flowers, 1.5 inches across, from late spring to first frost. The blossoms are so profuse that they literally smother the plant. They contrast nicely against the foliage mound of small, pinnate, blue-green leaves. 

Noted for its extremely long blooming season, Cinquefoil is an incredibly tough plant, withstanding summer drought as well as winter cold. It is also one of the easiest plants to care for. It is a perfect shrub for informal hedging or sunny borders.