Croton pests

Sticky residue points toward sap-feeding insects such as scale or mealybugs. Fine pale stippling and webbing suggest mites. Silver scars with black specks warrant checking for thrips.

Inspect the sheltered places

Check both leaf surfaces, the main ribs, and stem joints with a magnifier. Separate the plant and wipe away visible insects and honeydew; test any labeled treatment on a few leaves before treating the whole plant.

Use the pest identification guide to choose treatment, including repeat applications for newly hatched pests. Keep the croton warm and bright during treatment so a cold move does not add further leaf loss.