Downspout water run off - Keeps mulch in flower bed. This would also be a wonderful way to harvest rain water in drought prone or low rain pro areas. The mulch is a necessary ingredient in that it holds the moisture in the soil.
Everyone has to deal w fence. Was planning a rose garden along the back of my garage. facing the rock/perennial garden. Never thought of combining these two plants. Knockout roses and hostas planted along fence >> This is so beautiful!