These aphids mature within two weeks, keeping the numbers multiplying throughout the summer. Then, if the plant gets too crowded, he says a generation of flying male and female aphids is produced, and they move on to greener pastures. This generation starts the whole process over again on a new plant. It becomes apparent that, if left unchecked, aphid populations can build to damaging numbers quickly. Fortunately, there are a number of ways to keep these pests in check, Goodspeed says.
Aphids have many natural predators.
Both adults and larval stages feed on aphids. However, we must be patient for predator numbers to build up, and that usually doesn't happen until the aphid population grows significantly. Keep in mind that most plants can withstand some aphid damage. If the aphids are getting out of control, lady beetles and other predators can be purchased at nurseries and garden centers. Insecticidal soaps can also be used to control aphids, he adds.