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Companion Planting
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Companion planting means arranging the plants in a garden in such a way that they enhance the growth and quality of nearby crops, provide maximum ground cover, and, if possible, improve the soil.

Companion plants are also a way of controlling insect populations. Fragrant flowers and herbs drive away pest insects. For example, an annual with a strongly fragranced leaf and blossom that many insects find unattractive is the marigold. Not only does its strong odour confuse pests looking for their favourite plants, but their roots give off a substance which repels nematodes. Planting a couple of rows of marigolds around the edge of your garden will add both beauty and a measure of protection for your vegetables.

Antagonist plants as their name implies have negative effects when planted together, and should therefore be grown apart from each other.

Plants may be good Companions because:

• They like the same soil and weather conditions

• One helps the other by loosening the soil for its roots

• One gives welcome shade and protection to its companion

• One attracts an insect that is beneficial to the other

• One deters a pest that habitually attacks the other for instance sage, rosemary, thyme

repel the cabbage butterfly; onions and leeks repel the carrot fly.

• One may leave a residue in the soil that benefits its companion.

• Plants with strong odours do confuse, deter, and often stop some pests.

• Some plants hide other certain plants we don’t want detected.

• Some plants (especially herbs) are considered nursery plants for beneficial insects,

providing shelter, nectar, pollen, and even dark, cool moist spots.

Listings of companions and antagonists are given. To interpret the lists:

• CABBAGE FAMILY: includes Broccoli, Brussels Sprouts, Cauliflower, Kohlrabi

• MARROW FAMILY: includes Courgette, Cucumber, Pumpkin, Squash

• ONION FAMILY: includes Chives, Garlic, Leek

—-000—-

Attribution: the lists given here are based on those produced by Jean Howgill at the Rowley Fields

Allotment Society in Leicester , website <http://beehive.thisisessex.co.uk/?WCI=SiteHome&ID=1891>

Plant

Can be planted with

To Repel These

But do not plant with

Basil

Tomatoes

Mosquitoes, Flies,  Hornworms

 

Beans

Beets, Cucumbers, Corn, Radishes, Rosemary

 

Onions, Garlic

Beets

Bush Beans, Cabbage, Lettuce

 

 

Borage

Tomatoes, Squash, Strawberries

Tomato Worm

 

Broccoli

Herbs, Onions

 

 

Cabbage

Dill, Mint, Onions, Rosemary, Sage, Thyme

 

 

Caraway

Plant throughout the garden to loosen the soil.

 

Dill

Carrots

Peas, Cabbage, Leaf Lettuce, Radishes, Tomatoes, Chives

 

 

Catnip

Aubergine

Flea Beetle, Ants

 

Chamomile
(keep thinned)

Cabbage, Onion

 

 

Chervil

Radish

 

 

Chives

Carrots, Roses

Aphids, Mites, Nematodes

 

Coriander

 

Aphids

 

Corn

Beans, Cucumbers, Melons, Peas, Potatoes, Squash

 

Tomatoes

Cucumbers

Cabbage, Corn, Lettuce, Marigolds, Onions, Radishes

 

 

Dill

Cabbage, Lettuce, Corn, Cucumber

Aphids, Mites

 

Feverfew

Roses

attracts aphids away from roses

 

Flax

Carrots, Potatoes

Potato Bug

 

Garlic

Roses, Raspberries

Japanese Beetles, Aphids, Mosquito Larvae, Caterpillars, Borers, Mites

 

Horseradish

Potatoes

Potato Bug

 

Hyssop

Cabbage, Grapes

Cabbage Moth

Radishes

Lavender

 

Moths -- combine with southernwood, wormwood and rosemary in an anti-moth sachet

 

Lettuce

Beets, Cabbage, Carrots, Onions, Radishes

 

 

Marigold

Most Plants, especially Tomatoes

Nematodes, Whiteflies, Mexican Bean Beetles, Tomato Hornworms

 

Mint

Cabbage, Tomatoes

Cabbage Moths, Aphids, Ants, Flea Beetles

 

Nasturtiums

Cabbage, Radishes, Tomatoes, Cucumbers

Aphids, Pumpkin Beetles, Squash Beetles, Cabbage Moths, Potato Beetles, Whiteflies

 

Onions

Beets, Cabbage, Lettuce, Tomatoes

Borers, Mites, Slugs, Cutworms

Beans, Peas

Peas

Beans, Carrots, Corn, Cucumbers, Radishes, Turnips

 

Onions, Garlic

Pennyroyal

Roses

Flies, Mosquitoes, Fleas, others

 

Peppers

Basil, Marjoram, Oregano, Carrots, Tomatoes

 

 

Petunia

Beans

Aphids, Leafhoppers, Mexican Bean Beetles

 

Radishes

Peas, Leaf Lettuce

Cucumber Beetles

 

Rosemary

Beans, Cabbage, Carrots, Sage

Carrot Flies, Cabbage Moths, Mexican Bean Beetles

 

Rue

Roses and Raspberries

Japanese Beetles

Sweet Basil

Sage

Cabbage, Carrots, Cucumbers, Tomatoes, Rosemary

Cabbage Moths, Flea Beetles, Slugs

 

Spinach

Cabbage

 

 

Squash

Corn, Cucumbers

 

 

Summer Savory

Beans

Bean Beetles

 

Tansy

Fruit Trees, Roses, Raspberries

Flying Insects, Japanese Beetles, Striped Cucumber Beetles, Squash Bugs, Ants, Flies

 

Tomatoes

Basil, Sage, Marigolds, Nasturtiums, Asparagus

 

 

Thyme

Cabbage

Cabbage Worms

 

Wormwood

 

Plant as a border to keep animals out of the garden.

 

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