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Companion Plants

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Forget all the pricey fertilizers and insecticides. If you want a healthy and bountiful garden on the cheap, just put a little thought into which plants you put together. Farmers have long-recognized that certain plant combinations (known as companion plantings) can:

  • Control pests
  • Attract pollinators
  • Encourage growth
  • Increase the flavor of edibles
  • Maximize garden space

Here's a list of companion plant combinations to try in your garden:

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Companion Plants

To Control Pests … 
PlantWith
Asparagustomatoes, marigolds, petunias or parsley (repels asparagus beetle)
Beansmarigolds, potatoes, summer savory, nasturtium, petunias or rosemary (repel Mexican bean beetle), corn (repels raccoons), rhubarb (repels black fly)
Beetsonions (repel aphids, leaf miners and more)
Broccolirosemary, dill, mint and sage (repels cabbage moth), oregano (repels cabbage butterfly), nasturtiums (repels aphids)
Brussels sproutsoregano or nasturtiums (repels cabbage moth)
Cabbagecatnip (repels aphids, cabbage moth, etc.), onions (repels rabbits), mint, sage, celery thyme, rosemary, oregano, southernwood, nasturtiums or hyssop (repels white cabbage moth), turnips or geraniums (repel cabbage worm), dill or clover (repel aphids and worms)
Carrotsleeks, onions, rosemary, sage, chives or coriander (repel carrot fly)
Cauliflowersage (repels cabbage moth), oregano (repels cabbage butterfly), nasturtiums (repels aphids)
Celeryleeks, onions, rosemary, sage, chives or coriander (repel carrot fly)
Chardonions (repels aphids and slugs)
Cornbeans, cucumbers, melons, squash or pumpkins (deters raccoons), radishes (repels corn borers)
Cucumberscorn (protects against wilt), radishes, oregano, nasturtiums or tansy (repel cucumber beetles), garlic (repels aphids), dill (repels aphids and spider mites)
Eggplantgreen beans (repels Colorado potato beetle), marigolds, thyme or tarragon (repel nematodes and more)
Fruit treesnasturtiums (repels aphids, codling moths), southernwood or lavender (repels moths), clover (repels aphids), parsnips
Grapeschives (repels aphids), basil, geraniums (repel Japanese beetles), oregano (repels moths)
Green beanssummer savory or potatoes (repels bean beetles)
Kohlrabilettuce (repels earth fly), mint (repels cabbage maggot), oregano (repels cabbage butterfly), sage (repels cabbage maggot & moth), chives (repel aphids), thyme (repels cabbage moth)
Leekscarrots (repels onion fly and leek moth)
Lettucemint or hyssop (repels aphids & cabbage worm), sage (repels slugs and cabbage moths), onions, garlic (repels rabbits) dill (repels aphids, attracts hoverflies & predatory wasps), chervil (repels aphids and slugs)
Melonsmarigolds or oregano (repel cucumber beetles), nasturtium (repels aphids and cucumber beetles)
Onionscarrots (repels onion fly)
Peasgarlic (repels aphids)
Peppersgeraniums (repels beetles), marigolds (repels nematodes)
Potatoesbeans, hoseradish, nasturtium, catnip or coriander (repels Colorado potato beetle), marigolds (repels nematodes)
Pumpkinsmarigolds, nasturtiums, oregano (repels squash bugs and beetles), radishes (repels flea beetle), dill (repels spider mites and aphids)
Radisheslettuce (repels earth fly), nasturtiums (repels flea beetles)
Raspberriesgarlic or rue (repels Japanese beetles)
Rhubarbgarlic or onions (repel aphids)
Spinachradishes (attracts leaf miners away from spinach)
Squashnasturtiums and tansy (repels squash bugs and flea beetles), borage (deters worms), radishes (repels flea beetles, squash borers), lemon balm
Strawberriesborage (attracts predatory wasps), thyme, onions (scent repels many pests)
Sweet potatoessummer savory, dill or thyme (repels weevils), marigolds (repels nematodes)
Tomatoeschives, garlic, onions, leeks, shallots or chives (repels aphids and other pests), borage, marigolds, petunias (repels hornworm), nasturitums (repels aphids and whitefly), asparagus (repels nematodes), borage (increases disease resistance), geranium
Vegetablesmarigolds, nasturtium or borage (smell repels many pests)
Watermelonnasturtiums (repels white fly), oregano (repels cucumber beetle)
Zucchininasturtiums or marigold (repels squash bugs and flea beetles)
  
To Attract Pollinators … 
PlantWith
Cucumbersdill or borage (attracts wasps and honey bees)
Fruit treessweet alyssum (attracts wasps), basil or lavender (attracts bees)
Grapeshyssop or basil (attracts honey bees)
Peppersbasil, bee balm, marjoram (attract honey bees and wasps)
Potatoessweet alyssum (attracts wasps)
Pumpkinsdill (attracts wasps and honey bees)
Strawberriesborage (attracts bees and wasps)
Squashborage, dill (attracts bees and wasps)
Tomatoesmint, borage, bee balm or basil (attracts honey bees and wasps)
  
To Maximize Garden Space … 
PlantWith
Asparagustomatoes
Beansradishes, chard, celery
Beans, polesquash, corn, cucumbers
Beetslettuce, kohlrabi
Broccolibeets, marigolds, nasturtiums (require little calcium), lettuce, spinach, radishes (require little space)
Carrotslettuce
Celerybeans, tomatoes, spinach
Cornpole beans, melons, summer squash, zucchini, pumpkins, cucumbers, potatoes, peas
Cucumberscorn, beans, peas, carrots, radishes, beets
Eggplantbeans, peas, spinach
Kohlrabibeets, potatoes
Lettucebeans, sunflowers, carrots
Peasbeans, corn, cucumbers, carrots, turnips, radishes, potatoes, tomatoes, celery, eggplant, spinach
Peppersmarjoram, basil
Potatoesradishes, spinach, lettuce, scallions, cabbage
Radishespeas, beans, lettuce
Spinachbeans, peas, squash, broccoli, cauliflower, cabbage, kale, celery
Strawberriescaraway
Summer squashcorn, pole beans, spinach, cucumbers
Tomatoescarrots, asparagus, lettuce, spinach, arugula, chard, celery
Watermeloncorn, peas, sunflowers
Zucchinicorn
  
To Improve Growth & Flavor … 
PlantWith
Asparagusparsley, dill, coriander, carrots, tomatoes, parsley, basil, marigolds, comfrey
Basiltomatoes
Beanscarrots, cabbage, cucumbers, summer savory
Beans, bushstrawberries, beets
Beetsbush beans (nitrogen fixer), garlic, mint, kohlrabi
Broccolibeans (nitrogen fixer), garlic, celery, onions, potatoes, peppermint, dill, rosemary, chamomile, sage, rhubarb, chives, chervil
Brussels sproutsbeans (nitrogen fixer), peppermint, dill, rosemary, chamomile, sage, rhubarb, chives
Cabbagegarlic, mint, dill, rosemary, chamomile, sage, chives, celery
Carrotsbeans (nitrogen fixer), garlic, chives
Cauliflowerbeans (nitrogen fixer), garlic, peppermint, dill, rosemary, chamomile, sage, rhubarb, chives
Celerybeans (nitrogen fixer), tomatoes, leeks, cauliflower, cabbage
Cornbeans (nitrogen fixer)
Cucumbersbeans (nitrogen fixer), nasturtium, chamomile
Eggplantbeans (nitrogen fixer), garlic
Fruit treesgarlic, leeks
Grapesclover
Green beanssummer savory
Kalebeans (nitrogen fixer), garlic, peppermint, dill, rosemary, chamomile, sage, rhubarb
Kohlrabigarlic, peppermint, dill, rosemary, chamomile, sage, rhubarb, beets
Lettuceonions, radishes, strawberries, cucumbers, carrots, okra, dill, beets, broccoli
Okragreen peppers, eggplant, chervil
Onionslettuce, cabbage, beets, strawberries, tomatoes, summer savory, chamomile, leeks
Parsleyasparagus
Peasbeans (nitrogen fixer), carrots, beans, potatoes, cucumber, corn, radishes, turnips
Peppersbee balm, garlic, tomatoes, onions, basil
Peppers, hottomatoes, green peppers, eggplant, okra, cucumbers
Potatoesbeans (nitrogen fixer), garlic, cabbage, corn, horseradish, sweet alyssum
Radishesbeans (nitrogen fixer), nasturtium, chervil, cucumbers
Rutabagaspeppermint, dill, rosemary, chamomile, sage
Spinach/lettucetomatoes (provides shade to delay bolting), strawberries
Strawberries beans (nitrogen fixer), borage (increases production and flavor), onions (increases disease resistance)
Summer squashbeans (nitrogen fixer)
Sweet potatoesSweet alyssum
Swiss chardbeans (nitrogen fixer)
Tomatoesbasil, bee balm, chives, mint, parsley, borage (calcium-rich)
Turnipspeas (nitrogen fixer) peppermint, dill, rosemary, chamomile, sage, rhubarb
Zucchinibeans (nitrogen fixer)
  
Do Not PlantWith
Asparagusgarlic, onions, potatoes
Basilsage, rue
Beansgarlic, onions, shallots, leeks, fennel, chives, gladiolus (they inhibit growth)
Beans, polekohlrabi, summer savory, beets
Beetspole beans or mustards (they inhibit growth)
Broccolipole beans, strawberries, tomatoes, peppers or mustards (they inhibit growth and flavor)
Brussels sproutstomatoes, peppers, mustards
Cabbagetomatoes, peppers, mustards, pole beans, strawberries, rue, grapes
Carrotsdill, parsnips
Cauliflowertomatoes, peppers, mustards
Collard greensgrapes, tansy, rue
Corntomatoes (they attract similar pests)
Cucumbersgarlic, sage, rue, potatoes
Dilltomatoes (attracts hornworm), lavender, carrots
Garlicbeans, peas
Grapescabbage, radishes, collard greens
Kaletomatoes, peppers, mustards
Kohlrabistrawberries, pole beans, tomatoes, peppers, mustards
Lettucecabbage (inhibits growth & affects flavor)
Mintparsley
Onionsbeans, peas, parsley, asparagus
Parsleymint
Parsnipscarrots
Peachestomatoes, potatoes, raspberries
Peasgarlic, onions, shallots, chives, grapes or gladiolus (they inhibit growth)
Peppersbeans, cabbage, brussels sprouts, cauliflower, broccoli, fennel, apriccots, kohlrabi
Potatoestomatoes, cucumbers, squash, raspberries, sunflowers (increase chance of potato blight), pumpkins (they inhibit growth) rosemary
Pumpkinspotatoes (they inhibit growth)
Radishescabbage, brussels sprouts, cauliflower, broccoli, turnips, hyssop, grapes
Rutabagastomatoes, peppers, mustards
Sageonions, cucumbers, rue
Squashpotatoes, sweet potatoes (will compete for space)
Strawberriesbroccoli, cauliflower, cabbage, brussels sprouts, kohlrabi
Sweet potatoessquash (will compete for space)
Tomatoescorn (they attract similar pests), potatoes (increases chance for disease), fennel, dill, kohlrabi, broccoli, cauliflower, cabbage and other brassicas, (they inhibit growth)
Turnipstomatoes, peppers, mustards, potatoes, radishes

*Note: Mint, horseradish and some of the other plants on the list can be invasive. Always do your own research before planting your garden.

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