It can be a battle to keep destructive insects to a minimum in your garden or vegetable patch. But we can use other plants to help the fight and keep sprays or chemicals to a minimum. This is often called Companion Planting and it's simply using other plants to help manage pests while helping each other to grow better and more healthy. Many pest repellent plants are herbs, so as a bonus, you will have a good supply of fresh herbs.
Pest repelling plants work different ways. You can use them in the garden or around the home. Firstly, plants with a strong scents like lavender, basil and oregano, produce oils that help to mask the plants natural scent that the insects are actually looking for. Others such as wormwood, produce a scent that insects find repulsive and drives them away.
Its good to plant a wide variety of insect repelling plants around your garden as they each have different benefits. If you are trying to protect a certain plant in particular, match and grow the repelling plant next to, or around the one you are trying to protect.
Some pest controlling plants include:
Lavender - Codler moth, onion maggots and moths that produce borer larvae.
Basil - Aphids, flies and mosquitoes.
Sage - A variety of insects including ants.
Chives - Ants, aphids, nematodes and defends against Blackspot disease.
Garlic - Fruit flies, White Cabbage Butterfly, Carrot fly, Grasshoppers, Spider mites and Beetles.
Oregano/Marjoram - Pumpkin Beetle, White Cabbage Butterfly.
Nasturtiums - Whitefly, Squash Bugs and Pumpkin Beetles.
Marigolds - Whitefly, Carrot fly, Spider mites, Beetles and soil nematodes.
Rosemary - Cabbage moth, Carrot fly and Mosquitoes.
Coriander - Grasshoppers and other locusts, aphids and spider mites.