Aphids are tiny, soft-bodied insects that cluster on new growth, stems, and the undersides of leaves, feeding on plant sap. Left unchecked, they can stunt growth, curl leaves, and attract ants that protect them in exchange for the sweet honeydew they secrete. Catching an infestation early makes every method below far more effective. What Are Aphids and Why They’re a Problem Aphids are tiny, soft-bodied insects that cluster on new growth, stems, and the undersides of leaves, feeding on plant sap. Left unchecked, they can stunt growth, curl leaves, and attract ants that protect them in exchange for the sweet honeydew they secrete. Catching an infestation early makes every method…