Protect Your Plants from Pests - Companion Planting

Clay or sandy soil

Companions are plants that have compatible growth habits and share space well; allies are plants that enhance growth and ward off insects.

For a quck guide of companion plant pairings, see the table below.

BEANS: Companions: Beets (bush beans only), cabbage family, carrots, celery, chard, corn, cucumbers, eggplants, peas, potatoes, radishes, strawberries. Allies: Marigolds (Mexican been beetles, nematodes), summer savory (bean beetles)

BEETS: Companions: Bush beans, cabbage family, lettuce, onions. Allies: Garlic

CABBAGE FAMILY: Companions: Beans, beets, celery, chard, cucumbers, lettuce, onions, potatoes, spinach. Allies: Catnip, chamomile, garlic, hyssop, mint, rosemary, sage and southernwood (cabbage moth); nasturtiums (beetles, aphids); tansy (cabbageworms, cutworms)

CARROTS: Companions: Beans, lettuce, onions, peas, peppers, radishes, tomatoes. Allies: Chives improve growth and falvor; rosemary, sage (carrot flies)

CORN: Companions: Beans, lettuce, onions, peas, peppers, radishes, tomatoes. Allies: Odorless mariglds, white geraniums (Japanese beetles); pigweed raises nutrients from the subsoil to the corn.

CUCUMBERS: Companions: Beans, cabbage family, corn, peas, radishes, tomatoes. Allies: Marigolds (beetles); nasturtiums (aphids, beetles) improve growth and flavor; oregano (pests in general); tansy (ants, beetles, flying insects)

EGGEPLANT: Companions: Beans, pepers, potatoes. Allies: Marigolds (nematodes)

LETTUCE: Companions: Beets, cabbage family, carrots, onions, radishes, strawberries. Allies: Chives, garlic (aphids)

PEAS: Companions: Beans, carrots, corn, cucumbers, potatoes, radishes, turnips. Allies: Chives (aphids); mint improves vigor and flavor

POTATOES: Companions: Beans, cabbage family, corn, eggplant, peas. Allies: Horseradish planted at the corners of the potatoes patch provides general protection; marigolds (insects)

PUMPKINS: Companions: Corn, melons, squashMarigold, nasturtiums (beetles); oregano provides general pest protection.

RADISHES: Companions: Beans, carrots, cucumbers, lettuce, melons, peas. Allies: chervil and nasturtiums improve growth and falvor

SQUASH: Companions: Celery, corn, melons, pumpkins. Allies: Borage (worms), improves growth and flavor; marigolds (beetles); nasturtiums (squash bugs, beetles); oregano provides general pest protection

STRAWBERRIES: Companions: Beans, lettuce, onions, spinach, thyme. Allies: Borage strengthens resistance to insects and disease. Thyme as a border (worms)

TOMATOES: Companions: Asparagus, carrots, celery, cucumbers, onions, parsley, peppers. Allies: Basil (flies, mosquitoes), improves growth and flavor; bee balm, chives and mint improve health and falvor; dill until mature, improves growth and vigor, marigolds (nematodes)


Bean Leaf Beetle

Brown Stink Bug

Buffalo Treehopper

California Red Scale

Chinch Bug

Garden Centipede

Garden Webworm

Pests of Perennials


Vegetable Weevil

Tarnished Plant Bug

Companion Planting