This will keep the soil moist and discourage weed growth. Aphids, spider mites, leafhoppers and thrips all take a shine to roses. However, they can be controlled without resorting to harmful pesticides. Proper care of roses as described above will help prevent a lot of problems. Aphids can be controlled with insecticidal soaps or rotenone.
Powdery mildew can also be a problem.
This can be controlled by allowing good air circulation, proper pruning and a weekly spray of 1 tablespoon baking soda mixed with a gallon of water. Hopefully, I've taken some of the mystery out of growing roses. So give a try. There are thousands of roses to choose from based on your available space, climate and personal preference. Simple Secrets to Successful Gardening .