A certain relationship exists between plants, and between insects and plants. Companion planting is the usual name given to the practice of planting according to these relationships, but actually four different practices are involved. Certain plants such as marigolds, mints and garlic are offensive to some insects, and will deter them when planted near other plants. Combinations of plantings produce crops that grow better and are healthier because of their proximity. Lure plants are located near a plant you want protected.
Insects attack the lure plants and can then be hand-picked and destroyed.
Additional tips Learn to identify insects and diseases so you'll be able to detect problems early. Encourage natural enemies such as toads, birds, ladybugs and praying mantis, who will eat harmful bugs. Rotate crops to avoid a build-up of pests in any one area. When planning your next garden, experiment with these forms of natural plant protection. No doubt you will also come up with your own safe and effective combinations.