This mold not only mars the appearance of the plant, but when abundant, will also reduce the food-making process of a plant known as photosynthesis. Honeydew is attractive to ants, flies, hornets and yellow- jackets. It can also mar cars, chairs, tables or other objects that are beneath aphid-infested plants. In some cases, cultural practices such as proper pruning, fertilizing and watering play an important role in preventing or suppressing an aphid infestation. When practical, try washing aphids off an affected host with a strong stream of water.
Beneficial insects play an important role in aphid control.
Remember certain insecticide applications will destroy these beneficial insects as well as targeted pest species. This practice could leave trees and shrubs unprotected if pest populations should increase in the future. The use of insecticides is often the only effective means of controlling an aphid infestation. A number of registered formulations of insecticides are available for aphid control. However, to avoid damaging valuable plants, apply the material only to plants that are specified on the label.