How wonderful to get so many great suggestions by asking just one question on this site! I checked out the links shown and printed out a list of rain garden plants that seemed very helpful. This year I will be pleased to get my dry creek bed dug, stones placed, edges covered with dirt and some sedum planted along the edges to hold it all together until the fall or next spring when I can decide on which plants to complete the project. So thank you all again for saving me research time when I need to be out digging!