Planetagarden
Pruning away the diseased material and thinning the inside of the shrub is the best way to control this disease, but if the infection is widespread, a copper fungicide will help kill it quickly. Powdery mildew – Powdery mildew is probably the most common problem in lilacs.
- What is eating my lilac leaves?
- How do you keep lilacs healthy?
- How do you rejuvenate lilacs?
- How do you kill lilac borers?
What is eating my lilac leaves?
Fall Webworm. Damage the leaves by both feeding and web building. ... They spin webs that enclose the leaves, usually at the end of a branch, to feed upon them. After they have defoliated a branch, they extend their nest to include additional foliage.
How do you keep lilacs healthy?
Trimming lilacs is best accomplished using clippers. Remove spent blooms all the way to the stems to prevent seeding and encourage more blooms later on. Cut back about a third of the branches. Cut away shoots growing near the ground that may be sprouting from the main trunk.
How do you rejuvenate lilacs?
Old, neglected lilacs can be renewed or rejuvenated by pruning. Home gardeners can choose between two different pruning methods. One way to renew a large, overgrown lilac is to cut the entire plant back to within 6 to 8 inches of the ground in late winter (March or early April).
How do you kill lilac borers?
Spray an insecticide designed to destroy borers on the trunk of your lilac tree. Because insecticides do not kill borers already in the branches of your tree, apply the product 10 days after you capture the first borers in the pheromone traps.
