"The Siberian Iris Butter & Sugar, 'Iris Siberica', a spring planted herbacious root, produces beautiful yellow and white flowers. Siberian Irises are very easy to raise. They have graceful stems, a neat growth habit, and their bloom foliage is outstanding. The foliage is attractive all year, even after the first frost when the plant turns a red-brown color. These Irises are used in perennial borders and for landscaping. Siberian irises are very adaptable and hardy plants. They prefer soils that are highly organic, but will do fine with average soils."