Mockorange Sawfly Larvae: Not Caterpillars, Need Different Control

The “worms” eating mockorange leaves are sawfly larvae, not caterpillars (they have more than five pairs of prolegs). B.t. won’t work. Carbaryl (Sevin) gives good contact control; imidacloprid applied to soil works systemically. For a softer approach, spray insecticidal soap every seven days during the larval feeding period.