Article #2: Companion Plants

Plant Companions and Effects
Asparagus Tomatoes, parsley, basil
Basil Tomatoes (improves growth and flavor); repels flies and mosquitoes.
Beans Potatoes, carrots, cucumbers, cauliflower, cabbage, summer savory, most other vegetables and herbs. Adds nitrogen to soil.
Beans(bush) Sunflowers (beans like partial shade, sunflowers attract birds and bees), cucumbers (combination of heavy and light feeders), potatoes, corn, celery, summer savory.
Beets Onions, kohlrabi.
Borage Tomatoes (attracts bees, deters tomato worm, improves growth and flavor), squash, strawberries.
Cabbage family Potatoes, celery, dill, chamomile, sage, thyme, mint, pennyroyal, rosemary, lavender, beets, onions. Aromatic plants deter cabbage worms.
Carrots Peas, lettuce, chives, onions, leeks, rosemary, sage, tomatoes.
Catnip Plant in borders; protects against flea beetles.
Celery Leeks, tomatoes, bush beans, cauliflower, cabbage.
Chamomile Cabbage, onions.
Chervil Radishes (improves growth and flavor).
Chives Carrots; plant around base of fruit trees to discourage insects from climbing trunk.
Corn Potatoes, peas, beans, cucumbers, pumpkin, squash.
Cucumbers Beans, corn, peas, radishes, sunflowers.
Dill Cabbage (improves growth and health), carrots.
Eggplant Beans
Fennel Most plants dislike it.
Flax Carrots, potatoes.
Garlic Roses and raspberries (deters Japanese beetle); with herbs to enhance their production of essential oils;  plant liberally throughout garden to deter pests (ex: near legumes).
Horseradish Potatoes (deters potato beetle); around plum trees to discourage curculios.
Lamb's quarters Nutritious edible weed; allow to grow in modest amounts in the corn.
Leek Onions, celery, carrots.
Lettuce Carrots and radishes (lettuce, carrots, and radishes make a strong companion team), strawberries, cucumbers.
Marigolds The workhorse of pest deterrents. Keep soil free of nematodes; discourages many insects. Plant freely throughout garden.
Marjoram Here and there in garden.
Mint Cabbage family; tomatoes; deters cabbage moth. House fly repellent.
Mole plant Deters moles and mice if planted here and there throughout the garden.
Nasturtium Tomatoes, radishes, cabbage,, cucumbers, plant under fruit trees. Deters aphids and pest of cucurbits.
Onion Beets, strawberries, tomatoes, lettuce (protects against slugs).
Parsley Tomato, asparagus.
Peas Squash (when squash follows peas up trellis). plus grows well with almost any vegetable; adds nitrogen to the soil.
Petunia Protects beans; beneficial throughout garden.
Pigweed Brings nutrients to topsoil; beneficial growing with potatoes, onions, and corn; keep well thinned.
Potato Horseradish, beans, corn, cabbage, marigold, limas, eggplant (as trap crop for potato beetle).
Pot marigold Helps tomato, but plant throughout garden as deterrent to asparagus beetle, tomato worm, and many other garden pests.
Pumpkin Corn
Radish Peas, nasturtium, lettuce, cucumbers; a general aid in repelling insects.
Rosemary Carrots, beans, cabbage, sage; deters cabbage moth, bean beetles, and carrot fly.
Rue Roses and raspberries; deters Japanese beetle. Keep it away from basil.
Sage Rosemary, carrots, cabbage, peas, beans; deters some insects. Not with cucumbers.
Soybeans Grows with anything; helps everything.
Spinach Strawberries
Squash Nasturtium, corn.
Strawberries Bush beans, spinach, borage, lettuce-as a border.
Summer Savory Beans, onions, Deters bean beetles.
Sunflower Cucumbers
Tansy Plant under fruit trees; deters pests of roses and raspberries; deters flying insects; also Japanese beetles, striped cucumber beetles, squash bugs; deters ants.
Tarragon Good throughout garden.
Thyme Here and there in garden; deters cabbage worm.
Tomato Chives, onion, parsley, asparagus, marigold, nasturtium, carrot, limas.
Turnip Peas
Valerian Good anywhere in garden.
Wormwood As a border, keeps animals from the garden.
Yarrow Plant along borders, near paths, near aromatic herbs; enhances essential oil production of herbs.