What's eating my vitis coignetiae?

Crimson glory vine is grown for spectacular autumn foliage rather than fruit, and has fewer pest problems than fruiting grapes. Vine weevil notches leaf edges and damages roots, and aphids may cluster on new spring growth. Birds are not a significant concern without fruit. Generally trouble-free once established.

Irregular notches around leaf margins from adult feeding; larvae in soil girdle roots, causing dieback — most serious in pots. Apply Steinernema kraussei nematodes to moist soil in autumn; check container compost for C-shaped white grubs when repotting; hand-pick adults at night.

Colonies on emerging shoot tips in spring; mild leaf curl and honeydew deposits; cosmetic only on a vigorous climber. Insecticidal soap spray on heavy colonies; encourage ladybirds; strong water jets; rarely requires further intervention.

White stippling across leaf surfaces; cast nymphal skins visible on undersides; reduces ornamental effect of foliage in summer. Spray insecticidal soap or neem oil onto leaf undersides in the evening; remove dense ground cover weeds that harbour overwintering adults.