Planting Crop |
Companion Plants |
Incompatible Plants |
Effects and Benefits |
Alliums (garlic, leeks, onions and chives) |
Tomatoes, carrots, fruit trees, strawberries, roses, beets, cucumbers, celery, lettuce, peppers, squash, cucumber and savory. |
Beans and peas. |
Deters carrot flies, aphids, weevils, fruit tree borers, moles, rust flies, nematodes, spider mites, black spot, and mildew. |
Basil |
Asparagus, tomatoes and peppers. |
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Deters tomato hornworms, thrips, asparagus beetles, aphids, flies, mosquitoes, and spider mites. |
Beans, bush |
Beets, carrots, celery, cucumber, corn, eggplant, potato and strawberries. |
Alliums and fennel. |
Deters Colorado potato beetles. Nitrogen fixing. |
Beans, pole |
Carrots, corn cucumber, eggplant, lettuce, peas, radish, savory and tansy. |
Cabbage and onions. |
Nitrogen fixing. Will grow up trellises or corn stalks anchoring them against wind and holding pods up high away from ground pests. |
Bee balm |
Tomatoes, strawberries and fruit trees. |
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Attracts honeybees and pollinators. |
Beets |
Bush beans, cabbage, onion and sage. |
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Can cross pollinate with Swiss chard. |
Borage |
Tomatoes, cabbage, strawberries and fruit trees. |
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Deters tomato hornworms and cabbage worms. Attracts honeybees and butterflies. Adds minerals to the soil. |
Cabbage family (cabbage, broccoli, cauliflower, Brussels sprouts, bok choy, kohlrabi and kale) |
Bush beans, beets, celery, mint, oregano, onions, savory, hyssop, tomatoes, marigold and nasturtium. |
Pole beans |
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Carrots |
Bush beans, pole beans, lettuce, onion, chives, peas, radish, tomatoes and sage. |
Dill |
Improves growth and flavor of cauliflower and chives. Can cross with wild carrot (Queen Anne’s lace). Attracts predatory wasps. |
Catnip |
Eggplant and tomatoes. |
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Deters flea beetles, gnats, mosquitoes and squash bugs. Attracts honey bees and pollinators. |
Celery |
Bush beans, cabbages, cauliflower, onions, spinach and tomatoes. |
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Deters white cabbage moths. |
Chamomile |
Cabbage and onions. |
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Chamomile tea improves soil and compost. |
Chervil |
Radishes and turnips. |
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Improves growth and flavor of radishes and turnips. |
Cilantro, coriander |
Cabbage and kale. |
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Deters aphids. Attracts honey bees and pollinators. |
Corn |
Pole beans, pumpkins and squash, peas, cucumbers, potatoes and cornflower. |
Tomatoes |
A heavy feeder, corn benefits from a nitrogen fixer planted nearby. |
Cucumbers |
Peas, beans, lettuce radishes, sunflowers, nasturtiums and marigolds. |
Potatoes and aromatic herbs. |
Will grow up trellises, sunflowers, or corn stalks anchoring them against wind and holding fruits up high away from ground pests. |
Dill |
Cabbage, lettuce, onions and fruit trees. |
Carrots, tomatoes and fennel. |
Improves growth of cabbage. Attracts honey bees and pollinators. |
Flax |
Carrots and potatoes. |
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Deters Colorado potato beetle. |
Lettuce |
Alliums, radishes, carrots, cucumbers and strawberries. |
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Can cross with wild lettuce weeds. |
Mint |
Cabbages and strawberries. |
Mint is aggressive and will overtake most other plants so give it room and harvest or cut back often. |
Deters cabbage moths, aphids, flea beetles and ants. Attracts honey bees and pollinators. |
Nasturtiums |
Cabbages, radishes, cucumbers, tomatoes, potatoes, peppers and fruit trees. |
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Deters nematodes. Attracts honey bees pollinators. |
Parsley |
Asparagus, carrots, alliums, tomatoes and roses. |
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Deters asparagus beetles, attracts hoverflies. |
Peppers |
Alliums, basil, nasturtiums and purslane. |
Eggplant, potatoes, tobacco and tomatoes (or where tomatoes were planted last year). |
Seed pulp of hot peppers, applied directly or diluted as spray, deters rodents, gophers and deer, but will not deter birds. |
Petunias |
Asparagus, cabbages, tomatoes, potatoes and beans. |
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Deters asparagus beetles, leafhoppers, aphids, Tomato hornworms, and Mexican bean beetles; source of natural insecticide sprays. |
Radishes |
Beets, carrots, spinach, parsnip, cucumbers, melons, squash, lettuce, beans and chervil. |
Hyssop |
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Spinach |
Celery, eggplant and cauliflower. |
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Tomatoes |
Basil, borage, carrots, nasturtiums, zinnias, petunias and parsley. |
Fennel, peppers, potatoes and eggplants. |
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Tobacco |
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Tomatoes, potatoes, peppers and eggplants. |
Trap plant for many insects and a source of natural insecticide sprays. Attracts night feeding moths and butterflies. |