|'Katherine Dykes' grows to 3 feet tall with an arching, graceful form. Foliage is medium green to gray-green, with 1 inch wide, lemon yellow flowers.
Bushy, compact, deciduous shrub with pinnate leaves. Flowers are saucer shaped and come in a variety of colors, yellow being most common. Native to the Rocky, Cascade and Olympic mountains, these hardy plants flower continuously from June through October with little preference to soil or water conditions.