Spider Mites on Holly: Webbing and Leaf Damage Control

Holly Bushes with Spider Webs? Spider Mites, Not Spiders

Fine webbing on holly with yellow/bronze stippling on leaves indicates spider mites. They pierce leaf cells, causing speckling, bronzing, and premature drop. Webs collect dust, looking dirty.

Control

• True miticides needed: Regular insecticides don't work.
• Options: Acephate (Orthene), bifenthrin, horticultural oil, insecticidal soap, spiromesifen (Forbid).
• Thorough coverage: Spray undersides of leaves.
• Repeat in 7–10 days for hatchlings.

Prevention

• Avoid broad-spectrum insecticides that kill predatory mites.
• Keep plants well-watered; drought stresses hollies and favors mites.
• Hose off dust periodically.

Early treatment prevents defoliation and plant decline.