Apple and Crabapple Insects Homeowners and small producers can produce useable apples in South Carolina with minimal insect damage if they are aware of the potential pest problems. Some insecticide applications may be necessary even under the best of conditions. There are several pests or groups of pests that feed on apple leaves. Most of these cause little real damage to the tree and are often best left alone. There are many natural enemies that feed on these pests.
Aphids are a fairly common problem on apples.
There are two major kinds that can build up to fairly high numbers during the summer. Both of these aphids have green bodies. The adult aphids may have wings or be wingless. Aphids are common on the tender young leaves on branch tips and on watersprouts. While feeding, the aphids produce honeydew.