IPM, integrated pest management, is using insects to control pests and diseases in the garden. But plants can be used to control pests as well.
Here is a list of plants and what insects they repel.
| INSECT PEST | REPELLING PLANT |
| Ants | pennyroyal, spearmint, southernwood, tansy |
| Aphids | garlic, chives and other alliums, coriander, anise, nasturtium and petunia around fruit trees |
| Borer | garlic, onion, tansy |
| Cabbage moth | mint, hyssop, rosemary, southernwood, thyme, sage, wormwood, celery, catnip, nasturtium |
| Colorado potato beetle | green beans, horseradish, dead nettle, flax, catnip, coriander, tansy, nasturtium |
| Cucumber beetle | tansy, radish |
| Cutworm | tansy |
| Flea beetle | wormwood, mint, catnip, interplant cole crops with tomato |
| Japanese beetle | garlic, larkspur, tansy, rue, white geranium |
| Leafhopper | petunia, geranium |
| Mexican bean beetle | marigold, potato, rosemary, savory, petunia |
| Mites | onion, garlic, chives |
| Nematodes | marigold, salvia, dahlia, calendula, asparagus |
| Rose chafer | geranium, petunia, onion |
| Slug | prostrate rosemary, wormwood |
| Squash bug | tansy, nasturtium, catnip |
| Tomato hornworm | borage, marigold, opal basal |
| Whitefly | nasturtium, marigold |