Because insects thrive on diseased plants, it is best to remove them from the garden as soon as possible (be sure to wash all tools, gloves, and your hands after). This will help prevent spreading of the insects and will also help to slow down the invasion of the bugs. At the end of the growing season it is essential that all/any diseased plants are removed to avoid problems the following year.
Maintain a clean garden and dispose of any debris and weeds on a regular basis. Weeds and debris are like open invitations to insects, and can attract pests to your garden. Watering your garden without wetting the foliage is very important to insect control. Insects are encouraged to stop and visit a while when the plants are wet. In fact, wet foliage encourages fungal diseases as well. Attempt to establish a routine of watering your garden in the early morning before the sun has risen completely. If that isn't possible, learn how to water the roots of the plant without watering the entire plant.
Learn to identify beneficial insects, invite them into your garden, and avoid killing them when killing other insects. Beneficial insects can also help keep your garden enemy-free by eating the unwanted invaders. Some beneficial insects are ladybugs, lacewings, ichneumon wasps, nematodes, and praying mantis. Search the Internet for more information on these insects and what they look like.
Be careful when ridding your garden of insects. Try to eliminate the pests only and spare the beneficial insects. Take care of your garden regularly for a healthy and hearty look.