Companion planting

Like most things in nature, companion planting is not an exact science. However, you can use this list, along with you experience and the advice of other local gardeners to help you achieve successful partnerships in your garden. You’ll probably be surprised how much difference it can make when you get the right (or wrong) companions.

Note: Plant names in italic are medicinal rather than culinary

Plant

Good Companions

Bad Companions

Notes

Apples

Chives, Horsetail (Equisetum), Foxgloves, Wallflowers
Nasturtiums, Garlic, Onions

Grass, Potatoes, Cedar, Walnut

Apricots

Basil, Tansy, Southernwood

Tomatoes, Sage

Arnica

Most plants

Suppresses growth of plants around it, attracts beneficial insects, contains thiopene which is toxic to pathological soil nematodes.

Asparagus

Tomatoes, Parsley, Basil

Garlic, Onion, Potato

Basil repels asparagus beetles.

Basil

Most garden crops, esp. Asparagus, Lettuce, Oregano, Peppers, Petunias, Tomatoes, Parsley, Apricots

Rue

Improves the flavour and growth of garden crops, especially tomatoes and lettuce. Repels asparagus beetles, flies, thrips, mosquitoes. Attracts beneficial insects and butterflies.

Beans

Carrots, Cucumbers, Cabbages, Lettuce, Peas, Parsley
Cauliflower, Spinach, Summer Savory, Marigold, Catnip

Onions, Garlic, Fennel, Gladioli, Sunflowers, Kohlrabi, Leeks, Shallots

Potatoes and marigolds repel Mexican bean beetles. Catnip repels flea beetles.

Beans, Broad

Potatoes, Sweetcorn, Dill, Marigold, Catnip

Onions, Garlic, Fennel, Gladioli, Sunflowers, Kohlrabi, leeks, shallots

potatoes and marigolds repel Mexican bean beetles. Catnip repels flea beetles.

Beans, Dwarf

Beetroot, Brassicas, Carrots, Cucumbers, Dill, Lettuce, Potatoes, Radish, Spinach, Sweetcorn, Strawberry, Summer Savory, marigold, catnip

Onions, Garlic, Fennel, Gladioli, Sunflowers, Kohlrabi, leeks, shallots

potatoes and marigolds repel Mexican bean beetles. Catnip repels flea beetles.

Beetroot

Onions, Silverbeet, Kohlrabi, Lettuce, Cabbage
Dwarf Beans, broccoli, brussels sprouts, bush beans, cauliflower, chard

Charlock, Field mustard, Pole (tall) beans

will stunt beans growth, good for compost as it’s high in Mg

Borage

most plants, but especially cabbage, cucumber, strawberry, squash, tomatoes

ttracts beneficial insects, repels tomato worms and other pests, improves flavour and growth of companions.

Brussels Sprouts

Beans (Dwarf), Beetroot, Celery, Cucumber, Onions, Rhubarb, Chamomile, Dill, Oregano, Sage, Marigold, Nasturtium

buckwheat, Calendula, carrots, hyssop, mints, rosemary, thyme, wormwood.

Strawberries

marigolds repel cabbage moths. Nasturtiums repel aphids.

Broccoli

Beans (Dwarf), Beetroot, Celery, Cucumber, Onions, Rhubarb, Chamomile, Dill, Oregano, Sage, Marigold, Nasturtium

buckwheat, Calendula, carrots, hyssop, mints, rosemary, thyme, wormwood.

Strawberries

marigolds repel cabbage moths. Nasturtiums repel aphids.

Cabbages

Beans, Beetroot. Celery, Mint, Thyme, Sage, Onion family,
Rosemary, Dill, Potatoes, Chamomile, Oregano
Hyssop, Southernwood, Nasturtiums, Tansy, Coriander, aromatic herbs, tomatoes, chard, spinach, and other brassicas such as broccoli, brussels sprouts, collards etc

Rue, Strawberries, Tomatoes, Garlic, dill, pole beans, radishes,peppers, mustards

tomatoes and celery repel cabbage worms.

Calendula

attracts beneficial insects, contains pyrethrum which is toxic to chewing insects and sap-suckers don’t like the smell

Cantaloupe (melon)

corn

Capsicum (Sweet Peppers)

Amaranth, Basil, Beans (Dwarf), Carrots, Lovage, Marjoram, Okra, Parsley, Geraniums

other peppers, petunias, eggplant, onions,

Fennel, Kohlrabi, Tomatoes, beans, cabbage family

tomatoes (likes but tomato hornworm)

Caraway

strawberries

dill

attracts beneficial insects

Carrots

Peas, Radishes. Lettuce, Chives, Sage, Onions, Leeks,

cabbage, early potatoes, rosemary, salsify, wormwood, dill, radish

parsnip

onions, leeks, and wormwood repel carrot flies

Carnations

Hyacinths

Cauliflower

Celery. Beans, Tansy, Nasturtiums

Strawberries

Celery

Tomatoes, Dill. Beans, Leeks, Cabbage, Cauliflowers

Chard

bush beans, kohlrabi, onions

pole beans

Chamomile

Mint, Cabbages, Onions

basil, cucumber

attracts beneficial insects, increases oil production in nearby herbs

Chervil

Dill, Coriander, Radish

Chilli (Hot Peppers)

Basil, Oregano, Parsley, Rosemary

cabbage, maize

repels cabbage moth

Chives

Parsley, Apples, Carrots, Tomatoes

berries, grapes, peas, roses

Improves flavor and growth of companions. Deters aphids and Japanese beetles.

Citrus

Guava

Collards

aromatic herbs, celery, beets, onion family, sage, tomato, Dill, strawberries pole beans, tomatoes, peppers, mustards

dill, strawberries pole beans, tomatoes, peppers, mustards

Coriander

Dill, Chervil, Anise, Cabbages, Carrots

Fennel

Corn

beans, cucumbers, early potatoes, melons, peas, pumpkins, soybeans, squash.

tomatoes

soybeans deter chinch bugs

Cornflower

attracts beneficial insects, contains thiopene which is toxic to pathological soil nematodes

Cucumbers

Potatoes (early crop only), Beans, Celery, Lettuce
Sweet Corn, Savoy Cabbages, Sunflowers, Nasturtiums,

radishes

late potatoes, sage

Radishes deter cucumber beetles. Cucumbers encourage blight in late potatoes.

Dill

Carrots, Tomatoes, Cabbage, Fennel, Coriander

broccoli, brussels sprouts, cauliflower, corn, cucumber, lettuce, onions

caraway, carrots, tomatoes

Dill is a beneficial companion plant to tomatoes when it is young, mature dill plants can suppress growth of tomatoes though.

Improves flavour and growth of cabbage family plants, deters aphids, cabbage looper, spider mites, squash bugs, attracts beneficial insects but also tomato hornworm

Echinacea

attracts hoverflies and parasitoid wasps, so they’re useful for pest control

Eggplant

green beans, peppers, potatoes, tarragon, tomatoes

green beans deter Colorado potato beetles.

Fennel

Dill

Almost all other plants esp. Beans, Tomatoes, Kohlrabi, Coriander, Wormwood

attracts beneficial insects, deters aphids

Foxgloves

Apples, Potatoes, Tomatoes

Fuchsias

Basil, Gooseberries, Tomatoes

Garlic

Roses, Apples, Peaches

cabbage, cane fruits, celery, cucumbers, lettuce, fruit trees, tomatoes

most other plants but especially Peas, Beans, Cabbages, Strawberries

deters aphids, ants, cabbage looper, cabbage maggot, rabbits

Geraniums

Grapevines

Gladioli

Strawberries, Beans, Peas

Grapevines

Geraniums, Mulberries, Hyssop, Basil, Tansy

Guava

Citrus

Horseradish

Fruit trees, Potatoes

Hyacinth

Carnations

Hyssop

Grapevines, Cabbages

Radishes

repels cabbage moth larva, cabbage butterfly. Attracts honey bees and butterflies

Kale

aromatic herbs, buckwheat, cabbage family, marigolds, nasturtiums

pole beans, strawberries

Kohlrabi

Beetroot, Onions

cabbage/cauliflower companions (except tomatoes)

Tomatoes, Beans, Fennel

kohlrabi stunts tomatoes

Leeks

Carrots, Celeryapple trees, cabbage family, lettuce, summer savory

Beans, English peas

repels aphids, cabbage worms, carrot fly

Lettuce

Carrots, Onions, Strawberries, Beetroot, Cabbages
Radishes, Marigolds, parsnips

Parsley, Celery, cabbage family

lettuce tenderizes summer radishes

Lovage

almost all plants but especially beans

rhubarb

attracts beneficial insects

Marigolds

almost all plants but especially Lettuce, Potatoes, Tomatoes, Roses, Beans cabbage family, cucumbers, peppers, melons, squash, tomato

stimulates vegetable growth and repels bean beetles, beet leafhoppers, aphids, potato bugs, squash bugs, and maggots. contains thiopene which is toxic to patalogical soil nematodes

Marjoram

all garden crops

stimulates vegetable growth.

Melons

Sweet Corn

Mint

Cabbages, Chamomile

Parsley

Mustard

alfalfa cover crops, fruit trees, grapes, legumes

Beetroot, Cabbage, Collards

stimulates the growth of companion plants

Nasturtiums

Apples, Cabbages, Cauliflowers, Broccoli
Brussels Sprouts, Kohlrabi, Turnips, Radishes,
Cucumbers, Zucchini beans, greenhouse crops, potatoes, pumpkins, squash

attracts beneficial insects. Repels aphids, cabbage looper, cucumber beetles, potato bugs, squash bugs, striped pumpkin beetles, Mexican bean beetles and destroys white flies in greenhouses.

Nettles

aromatic herbs

improves oil production in herbs, great nitrogen source in compost

Onions

Carrots, Beetroot, Silverbeet, Lettuce, Chamomile
Kohlrabi, Summer Savory, cabbage family, chamomile, parsnips

Peas, Beans

deters most pests, especially maggots. Improves oil production in herbs, great nitrogen source in compost

Oregano

all garden crops esp. Cabbages

deters many insect pests.

Parsley

Tomatoes, Asparagus, Roses, Chives, corn

Potatoes

Parsnips

Peas, Potatoes, Peppers, Beans, Radishes, Garlic,

onions,wormwood

Carrots, Celery, Caraway

onions and wormwood help keep root maggots from parsnips.

Peaches

Tansy, Garlic, Basil, Southernwood

Pears

Grass

Peas

Potatoes, Radishes, Carrots, Turnips

beans, corn, cucumbers, early potatoes

Onions, Shallots, Garlic, Gladioli, leeks

Potatoes

Peas, Beans, Cabbage, Sweetcorn, Broad Beans
Green Beans, Nasturtiums, Marigolds, Foxgloves
Horse Radish, Egg Plant

basil, corn, flax, hemp, squash

Apples, Cherries, Cucumbers (with any but early crops)
Pumpkins, Sunflowers, Tomatoes, Raspberries, Rosemary, birch, squash, turnips, walnuts

hemp deters phytophthora infestans. Basil deters potato beetles. Marigolds (dug into crop soil) deter nematodes.

Pumpkins

Sweetcorn

Potatoes

Radishes

Lettuces, Peas, Chervil, Nasturtiums, cucumbers, melons, squash, root crops

Hyssop, cabbage

Radishes deter cucumber beetles, black flea beetle. Chervil makes radishes hot. Lettuce helps make radishes tender. Nasturtiums improve radishes’ flavour.

Raspberries

Tansy

Blackberries, Potatoes

Rosemary

beans, cabbage, carrots, sage

basil

repels bean beetles, cabbage flies, cabbage moths, and carrot flies.

Roses

Garlic, Parsley, Onions, Mignonette, Marigolds

Rue

Sage, Basil

Sage

Carrots, Cabbages, Strawberries

beans, rosemary, tomatoes

Basil, Rue, Wormwood, cucumbers

Attracts beneficial insects. Deters ants, black flea beetle, cabbage fly, cabbage looper, cabbage maggot, cabbage moths. Invigorates tomato plants.

Savory

Beans, Onions

Silverbeet

Beetroot, Parsnip Tomato, Lavender, Brassicas (Broccoli, Cabbage, Cauliflower, etc.), Onion family (Chives, Garlic, Leeks, Onions, etc.), Lavender

Potatoes, Sweetcorn, Cucurbit family (Cucumbers, Gourds Melons Squash, etc.), most herbs

Soy beans

corn, potatoes

chokes weeds and enriches soil.

Spinach

Broad Beans, Cabbage, Cauliflower, Celery, Eggplant, Onion, Peas, Strawberries, Santolina (Cotton Lavender)

Squash

Sunflowers, Sweetcorn,

beans, buckwheat, catnip, corn, radishes, tansy

potatoes

attracts spiders and ground beetles

Strawberries

Borage, Lettuce, Spinach, Sage, Pyrethrum, bush beans

Cabbages, Cauliflowers, Brussels Sprouts
Gladioli, Tomatoes, Broccoli, Garlic

Sunflowers

Squash, Cucumber, corn, tomatoes

Potatoes

attracts aphids, used as a trap crop. Contains thiopene which is toxic to pathological soil nematodes. Can provide a trellis and shelter for shade-loving cucumbers.

Sweetcorn

Broad Beans, Potatoes, Melons, Tomatoes, Cucumber, Squash, Tansy

Tansy

Cabbage, Roses, Raspberries, Grapes, Peaches

beans, corn, cucumber, squash

repels many insects, attracts honeybee, contains thiopene which is toxic to pathological soil nematodes. Toxic for humans to eat.

Tarragon

all crops esp. eggplant

improves vegetables’ flavor and growth. Repels many pest

Thyme

all garden crops esp. Cabbage family

deters cabbage moths

Tomatoes

Asparagus, Celery, Parsley, Basil, Carrots, Chives
Marigolds, Foxgloves, Garlic, Sweetcorn borage, carrots, celery, geranium, gooseberries, marigolds, mustard, nasturtium, parsley, onions, oregano, parsley, peppers, petunias, rosemary, sage, stinging nettles

Rosemary, Potatoes, Kohlrabi, Fennel
Apricots, Strawberries, Dill

beets, cabbage family, cauliflower, corn, peas, walnut

Dill is a beneficial companion plant to tomatoes when it is young, mature dill plants can suppress growth of tomatoes though

Turnips

Nasturtiums, Peas, Beans, Carrots, Chicory, Chives, Spinach

Potatoes, Tomatoes, mustard

mustard and knotweed inhibit the growth of turnips and rutabagas.

Wallflowers

Apples

Walnut

almost all plants

don’t use leaves in compost, contains juglone which is toxic or growth-stunting to many types of plants.

Wormwood

All other plants

attracts beneficial insects, contains thiopene which is toxic to pathological soil nematodes

Yarrow

attracts beneficial insects, contains thiopene which is toxic to pathological soil nematodes

Zucchini

Nasturtiums

 

 

 

(sourcesourcesource, source)

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