Companion Planting Tips

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June 23, 2005

companion plantsPlants make great neighbors, especially to each other. They repel harmful insects, create shade and windbreaks for each other, help each other pollinate and even support each others climbing habits. By finding them the right companions, you can enhance the growth and success of every tree, shrub, vegetable and flower in your garden.


There are a number of ways to use companion plants to your advantage. You can space them throughout your garden, plant them as a boarder to protect the plants inside (like pest repelling marigolds) or use them as decoys to lure harmful insects away from other plants. If your garden space is limited, plant them in pots so you can move them as you need them.

Herbs with Repelling Personalities

Good repelling companions are often herbs. Garlic, for example, helps bush beans repel aphids. Catnip next to eggplants will repel flea beetles and chives under an apple tree will discourage apple scab. Strong smelling herbs that repel a variety of pests include anise, cilantro, dill, scented geranium, mint rosemary, sage, and tansy.

Herbs as Enhancers

Some herbs improve the flavor of their companions. Borage is said to improve the taste of strawberries and basil and thyme improves the flavor of tomatoes. Other herbs simply enhance the growth of their companions, like chervil improves radishes and summer and winter savory boosts onions.


Herbs Families that Lure Beneficials

Daisy family:

goldenrod, chamomile, coreopsis, marigold, sunflower, tansy, and yarrow will attract beneficial insects like assassin bugs, honeybees, hover flies, lacewings, lady beetles, and parasitic wasps to your garden.

Mint family:

The aromatic foliage of catnip, bee balm, hyssop, lavender, sweet marjoram, oregano, sage, and thyme lure honeybees, hover flies, and parasitic wasps. When planting herbs in this family as companions, keep them in pots or they will take over your garden!

Carrot family:

The umbrella shaped flower clusters on angelica, anise, caraway, dill, and fennel all work to attract hover flies, lacewings, lady beetles, and parasitic wasps.

Vegetables as Companions


Peas can be planted around tomato cages in early spring. As the weather allows, transplant the tomatoes. As the peas grow up the cage, they will protect young tomato plants from wind and keep them warmer. They'll also leave the soil nitrogen enriched before dying off.

Corn and Squash:

These two vegetables love to grow together. Squash provides shade for the soil, which reduces weed growth. Their prickly stems help deter hungry rabbits and raccoons. Corn, meanwhile, provides shade for squash and lends itself as a natural climbing trellis.

Pole Beans and Corn:

These also make good companions. The beans provide corn with nitrogen-enriched soil and the corn is happy to let the beans climb up its stalks.

It's good to note that while some plants enhance the growth and success of their companions, others can actually hinder it. Dill, for example, should be planted away from tomatoes, sage away from onions and garlic away from peas and beans. Although marigolds, sunflowers, and wormwood enhance some plants, they hinder the growth of many. Once you decide on the types of plants you want to grow, consult with the many books and resources available to find out which plants make good companions for them.

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