What's eating my parthenocissus quinquefolia?

Virginia creeper is bothered mainly by leafhoppers and scale insects outdoors. Deer may browse young shoots, and Japanese beetles skeletonize leaves in summer. The vine's vigorous growth usually outpaces light pest pressure, but heavy leafhopper infestations cause significant bleaching and cosmetic damage worth treating.

Pale stippled or bleached patches on leaves as insects pierce and drain cell sap; tiny white cast skins visible on leaf undersides. Knock adults off with a strong water jet; apply insecticidal soap or neem oil spray to undersides of leaves; remove weedy grasses nearby that act as reservoirs.

Skeletonized leaves — tissue eaten between veins leaving a lacy brown framework, typically mid-summer. Hand-pick beetles in the morning; use pyrethrin-based spray for heavy infestations; avoid pheromone traps near the plant as they draw more beetles in.

Raised brown or grey bumps on stems; sticky honeydew on surfaces below; leaves yellow and stems weaken. Scrub off with a soft brush dipped in dilute isopropyl alcohol; apply horticultural oil in late winter to smother overwintering crawlers.

Ragged removal of young shoots and foliage, especially in autumn and winter when other food is scarce. Install physical barriers or deer-repellent sprays (egg-solid or garlic-based products) applied after rain; plant within a fenced garden where possible.