Impatiens are the most popular annual bedding plant in the U.S. They feature simple leaves alternately arranged along the stem and profuse purple, yellow, pink, red, or white flowers. The sought-after, amazingly bright flowers are irregularly shaped and can be solitary or appear in small clusters. The result is a dramatic, consistent color display when they are planted in large groups. They can grow to 3′ in height but usually reach less than that. Impatiens perform best in moist, well-drained soil and in partial shade