Localized aphid infestations can be hand-picked or pruned out. Before planting vegetables, check surrounding weeds and other plants for aphids and destroy where found. Remove any aphids discovered on transplants before planting. Always remove all crop residues immediatly after harvest. Applications of insecticidal soap, horticultural oil, or Neem oil may also be effective.
Aphids are a favorite food of lady beetles.
Damsel bugs and the larvae of lacewings and flower flies are also effective predators of aphids. Many tiny wasps act as parasites of aphids as well. Treat when insects appear in damaging numbers. Treat when insects appear in damaging numbers. Repeat as needed.