From Wikipedia, the free encyclopedia
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This is a list of companion plant relationships. Many more are in list of beneficial weeds.
[edit] Temperate companion plants
[edit] Vegetables
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- Beneficial
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- Carrots, and Cauliflowers thrive in conjunction with beans
- Spinach benefits from the bean plant's tendency to improve soil nitrogen, and from the partial shade the plant provides.
- Eggplant is protected from California beetles by bean plants.
- corn benefits by bean plants vining directly up their stalks. This fixes nitrogen for them, anchors the stalk to make it stronger, and can even deter raccoons in their quest for the ears of corn.
- rosemary repels several parasitic insects, and likes the same dry, sandy soil.
- summer savory
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- Avoid
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[edit] Cabbage
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- Beneficial
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- Rosemary repels cabbage flies
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- Avoid
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[edit] Carrots
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- Beneficial
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- Onions are said to flourish with carrots
- Lettuce, and Chives?? combine with carrots too
- Tomatoes seem to grow faster and fruit more with carrots around; but may actually be drawing the nourishment from the carrots, which can end up growing much more slowly than normal.
- Onions, leeks and herbs such as rosemary, wormwood, and sage act as repellents to the carrot fly.
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- Avoid
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- Beneficial
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- Beans benefit corn by vining directly up their stalks. This fixes nitrogen for them, anchors the stalk to make it stronger, and can even deter raccoons in their quest for the ears of corn.
- Sunflowers have been planted between stalks or rows of corn for as many as a thousand years. Said to increase yields. Draws away aphids. DO NOT plant with beans!
- Squash protects the soil around the corn from weeds, and reduces water loss. Corn, beans, and squash are known together as the Three Sisters method of agriculture, which like sunflower/corn was in use by American Indians before modern Europeans settled the Americas.
- Cucumbers provide ground cover and partially support corn stalks.
- Peanuts encourage growth of both corn and squash, and provides ground cover.
- Soybeans fix nitrogen in the soil, provide cover, and repel cinch bugs and Japanese beetles.
- Amaranth yet another classic Amerindian companion crop, provides ground cover, grows tall enough to shade the ears of corn, purportedly making them sweeter, and hosts predatory beetles which help keep parasitic insects down.
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- Avoid
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[edit] Fennel
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- Beneficial
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- Avoid
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- Beneficial
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[edit] Lettuce
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- Beneficial
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[edit] Mustard
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- Beneficial
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[edit] Peppers
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- Beneficial
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- Themselves -- Because pepper plants need direct sunlight, but the fruit can be damaged by it, they are often planted very closely together, so that their upper leaves will shelter each other's fruit along the body of the plant.
- Tomato plants, similarly, are good for sheltering peppers. Both also grow in the same kind of acidic soil.
- Marjoram is said to enhance the flavor of peppers, as well as keeping some insects away because of its scent.
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- Beneficial
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- Tomatoes benefit from the onion repelling aphids
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- Avoid
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[edit] Potato
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- Beneficial
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- Avoid
[edit] Tomato
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- Beneficial
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- Basil is supposed to enhance the flavor of tomato fruit, as well as more definitely deterring certain insects (especially aphids and hornworms) because of its scent.
- Oregano has the same benefits as basil.
- Chili peppers, including bell peppers, benefit from the partial shade when planted very close to tomato plants. The pepper plants do need direct sunlight, but their fruit can suffer "blossom-end rot" from too much direct sunlight, so the spreading tomato plants may shade the fruit without blocking the topmost leaves.
- Parsley
- Carrots
- Marigolds attract hover flies, which eat the aphids which are a threat to tomato plants.
- Roses are ostensibly protected from black spot by tomato plants
- Chives repel several types of insect pests, as do its relatives, including onions and garlic.
- Celery is said to improve growth.
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- Avoid
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[edit] Alliums (onion, garlic, chives, et cetera)
- Repels many insects, especially useful for tomatoes and peppers
- Tomato provides shade for the basil, while the basil repels some pest insects and may improve flavor
- Pepper may have its flavor improved by basil
- Asparagus has pest insects repelled by basil
- Petunias
[edit] Borage
[edit] Chervil
[edit] Garlic
[edit] German Chamomile
- Repels a number of parasitic beetle larvae which attack cabbage, broccoli, and their relatives
[edit] Hyssop
[edit] Peppermint
- protects cabbage-species against cabbage flies
[edit] Rosemary
- sage, shunts cabbage flies
- cabbage; repels several pests
- beans; repels several of its parasites
- carrots
[edit] Savory
[edit] Southernwood
- For use with all kind of fruit-trees
[edit] Valerian
- Protects all kinds of vegetables
[edit] Yarrow
[edit] Flowers
[edit] Geraniums
- attract pests away from roses and grape vines
[edit] Marigold
- Improves growth of tomato, repels parasitic flies
[edit] Nasturtium
[edit] Tagetes
- Leek
- Garlic
- Nasturtium
- Southernwood
[edit] Walnut
- Black walnut is harmful to the growth of all nightshade plants, including Datura or Jimson weed, eggplant, mandrake, deadly nightshade or belladonna, capsicum (paprika, chile pepper), potato, tobacco, tomato, and petunia.
[edit] Tropical companion plants
none as of yet
[edit] References
[edit] See also
List of beneficial weeds
List of repellant plants
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