Regular fertilizer applications are necessary for good perennial growth. Apply 5-10-5 fertilizer in a ring around each perennial in the spring just as growth starts. Make two additional applications at six week intervals. Late bloomers such as chrysanthemum need an additional application in late summer. Always water the perennial bed after fertilizing.
When inspecting or repairing gutters, take the opportunity to attach narrow gauge chicken wire along the length of the gutters to prevent them from becoming blocked with debris.