"We have a group of crepe myrtles growing in our sunny front yard in Zone 7. Grass won't grow in the area beneath them, so we put down mulch. We'd like to add a mix of plants there for more color.

When I think of color for shaded areas in the landscape, my thoughts immediately go to impatiens. Impatiens have been the go-to annual bedding plant for decades to provide bright, beautiful flowers in ...