Aphids feed exclusively on living plants and trees. Their specialized mouths drink the nutrient-rich fluids from the plants on which they live. New, unopened flower buds, young stems or branches and the undersides of developing leaves are prime locations for aphid feeding.
Most aphids eat a huge variety of plants but some tend to live on one type of vegetation. These specifically targeted plants include cabbage, melons, potatoes, beans and apples. As they suck the fluids out of leaves and stems, the plants can start to curl up or shrivel.
Aphids produce a sticky substance called “honeydew” as they digest the plant fluid. This substance can start to cover plants and breed a fungus called “sooty mold”. It also attracts ants, yellowjackets and other pests that feed on it.
The average life cycle of an aphid is between one week and approximately one month. They can reproduce with or without a mate. In the spring, female aphids reproduce asexually, giving birth to dozens of nymphs every week. The spring and summer can see many new generations of aphids formed and rapid increases in populations. In the fall, male and female aphids mate to lay eggs. The eggs overwinter before hatching in the spring.