Customer has some dead rhodos in her backyard she wants replaced. I told her no problem, but she might be better with a different plant choice. The area they're planted in receives partial sun, has clay soil, and is wet. Poor drainage. They're in a garden bed that we added cedar mulch to a couple of weeks ago. Previously it hadn't been mulched. The Rhodos died over the winter. So should I replace them with new ones and try to raise the bed height? Or would another choice be more appropriate? Zone 4-5 BTW.