However, they also require season-long attention. Adequate water during dry periods is essential for continuous bloom. Roses require at least an inch of water per week. A good mulch layer around the plants will help retain soil moisture.
Water roses early in the day and avoid wetting the foliage.
Black spot, a serious foliage disease of roses, is spread by water splashing on the leaves. It is important to continually remove spent blooms from roses. Spent blooms left on the plant may form seed pods, called hips. Seed pod formation requires a great deal of the plant's energy and slows flower production. Ideally this should be an outward-facing leaf.