What's eating my alocasia odora?

Alocasia odora (giant upright elephant ear) is grown indoors in cool climates and outdoors in warm regions. It attracts spider mites and mealybugs indoors. Outdoors, caterpillars and slugs may feed on the large paddle-shaped leaves. Its size means infestations can spread across many leaf surfaces quickly — inspect both sides of every leaf regularly.

Bronze stippling across the large leaf surfaces, visible webbing on undersides, premature yellowing of lower leaves Hose down leaves thoroughly, maintain good humidity, apply neem oil or insecticidal soap spray weekly

White waxy clusters at petiole bases and leaf axils, sticky honeydew, sooty mold, stunted growth Wipe off with alcohol swabs, spray with neem oil diluted in water; repeat every 7 days for 4 weeks

Irregular ragged holes in large leaves, especially noticeable on young unfurling growth; slime trails visible Scatter iron phosphate pellets around the base, use copper tape on containers, remove by hand at night

Large irregular chunks eaten from leaf edges and centres; caterpillars visible on undersides at night Hand-pick caterpillars; apply Bacillus thuringiensis (Bt) spray to leaves for persistent infestations