I'm a minimalistic gardener - sort of Darwinian in my attitude, but the one thing I will do for my roses is mulch them as it saves on watering and weeding; plus it gives me somewhere to get rid of old grass clippings, sawdust, leaves and barnyard manure., etc.. Most people would tell me that much of what I use is not suitable - hah! Around here anything can be mulch, and so far it is working.