From Sustainable Gardening Australia (http://www.sgaonline.org.au)
|Plant||Good Neighbours||How it works||Bad Neighbours|
|Apple||Nasturtium, Chives||Nasturtium climbs tree and is said to repel codling moth||Potatoes|
|Apricot||Basil, Tansy, Asparagus||Basil and tansy are said to repel damaging insects|
|Asparagus||Apricot, Basil, Chives, Comfrey, Lovage, Marjoram, Parsley, Tomatoes||Basil and Parsley are said to improve flavour. Onions and garlic release substances reducing growth.||Garlic, Onions|
|Balm (Lemon)||Tomatoes||Attracts bees, said to enhance flavour and growth|
|Basil||Tomatoes||Basil said to repel flies and mosquitoes|
|Beans (climbing)||Broccoli, Brussel Sprouts, Cabbage, Carrots, Cauliflower, Corn, Lettuce, Lovage, Majoram, Parsley||Beetroot, Chives, Garlic, Gladiolus, Onions, Sunflower|
|Beetroot||Beans (bush), Broccoli, Brussel Sprouts, Cabbage, Cauliflower, Kohl Rabi, Lettuce, Lovage, Marjoram, Onion, Peas, Potato, Spinach, Silverbeet||Bad Neighbours roots release substances reducing growth||Beans (Climbing), Tomato|
|Borage||Squash, Strawberries, Tomato||Said to deter tomato worm and improve tomato flavour and yield. Said to increase strawberry yield.|
|Brassicas (Incl: Broccoli, Cabbage, Cauliflower)||Beans, Beetroot, Carrots, Chamomile, Coriander, Cucumber, Dill, Lettuce, Lovage, Marjoram, Marigold (French), Mint, Nasturtium, Pea, Potato, Rosemary, Sage, Tansy, Thyme,TomatoZinnias||Dill attracts a Cabbage White Butterfly controlling wasp. Nasturtium disguises and repels aphids. Sage repels the Cabbage White Butterfly. Zinnias attract ladybirds, which we love! Bad Neighbours roots release substances reducing growth||Garlic, Rue, Strawberry|
|Capsicum, Chilli||Carrots, Onions, Tomato|
|Carrots||Beans, Chives, Coriander, Cucumber, Leeks, Lettuce, Lovage, Marjoram, Onion, Pea, Radish, Rosemary, Sage, Tomato||Bad Neighbours roots release substances reducing growth||Dill, Celery|
|Celery||Cabbage, Chives, Dill, Dwarf Beans, Leek, Lovage, Majoram, Onion, Pea, Sage, Spinach, Tomato||Bad Neighbours roots release substances reducing growth||Carrots, Parsnip, Potato|
|Chamomile||Cabbage, Onion||Deters flies and mosquitoes. Strengthens neighbouring plants|
|Chives||Apples, Cucumbers, Lettuce, Peas||Prevents Apple Scab. Said to deter aphids||Beans|
|Cucumber||Basil, Bens, Borage, Broccoli, Brussel Sprouts, Cabbage, Carrot, Cauliflower, Corn, Dill Kohl Rabi, Lettuce, Lovage, Marjoram, Nasturtium, Parsnip, Pea, Radish, Sunflower, Tansy||Bad Neighbours roots release substances reducing growth||Potato, Sage, Strongly Aromatic Herbs|
|Dill||Brassicas (Incl: Broccoli, Cabbage, Cauliflower)||Dill attracts a Cabbage White Butterfly controlling wasp|
|Garlic||Apricot, Cherry, Mulberry, Parsnip, Peach, Pear, Raspberry, Rosemary, Rose||Deters aphids, especially from roses and raspberry. Repels Cabbage White Butterfly||Beans, Cabbage, Peas, Strawberry|
|Kohl Rabi||Beetroot, Onion||Beans, Tomato|
|Leek||Carrot, Celery, Lovage, Majoram, Onion, Parsnip, Strawberry||Beans, Peas, Parsley|
|Lettuce||Achillea, Beans, Beetroot, Cabbage, Carrot, Chervil, Coreopsis, Cucumber, Lovage, Marjoram, Marigold (French), Onion, Parsnip, Pea, Radish, Strawberry, Zinnia||Achillea, Coreopsis & Zinnia attract pollinators and offer shade for lettuce||Parsley|
|Marigolds (French)||Numerous vegetables, including tomato||Kills root knot nematodes and eel worm|
|Melon||Radish, Sweet Corn|
|Mint||Cabbage, Tomato||Deters pests such as Cabbage White Butterfly, ants and fleas|
|Nasturtium||Cabbages, Fruit Trees, Radishes, Zucchini||Flowers repel aphids and codling moth. Cabbage white butterfly is attracted to this plant, and will seek it out over cabbages|
|Onion||Beetroot, Broccoli, Cabbage, Carrot, Chamomile, Leeks, Lettuce, Lovage, Marjoram, Parsley, Parsnip, Silverbeet, Strawberry, Summer Savory, Tomato||Smell of onion said to deter numerous pestsOnions release substances reducing growth of Bad Neighbours||Asparagus, Beans, Gladioli, Peas|
|Parsley||Asparagus, Sweet Corn, Tomato||Said to improve flavour of asparagus and tomato|
|Peas||Beans, Beetroot, Brussel Sprouts, Cabbage, Carrot, Cauliflower, Celery, Cucumber, Lettuce, Lovage, Marjoram, Parsnip, Potato, Radish, Sage, Squash, Sweet Corn||Bad Neighbours roots release substances reducing growth. Sweet Corn has traditionally been used as “living stakes” for peas||Chives, Garlic, Onion, Shallots|
|Potato||Beans, Broccoli, Brussel Sprouts, Cabbage, Cauliflower, Corn, Eggplant, Horseradish, Lovage, Marjoram, Marigold (French), Nasturtium, Parsnip, Peas, Sweet Alyssum, Sweet Corn, Watermelon||Sweet Alyssum and Marigolds attract beneficials and suppress weedsPotatoes release substances reducing growth of Bad Neighbours. Horseradish should be planted at the corners of the patch||Apple, Celery, Cherry, Cucumber, Pumpkin, Raspberry, Rosemary, Squash, Sunflower, Tomato|
|Pumpkin||Beans, Cabbage, Eggplant, Peas, Radish, Sweet Corn||Bad Neighbours roots release substances reducing growth||Potato|
|Radish||Beans, Carrot, Chervil, Cucumber, Sweet Corn, Cucumber, Lettuce, Lovage, Marjoram, Nasturtium, Parsnip, Pea, Spinach, Sweet Corn||Radish is said to attract leaf miners from Spinach||Hyssop|
|Raspberry||Blackberries, Potato, Tomato|
|Rosemary||Beans, Cabbage, Carrot, Sage||Said to deter Cabbage white butterfly. Attracts beneficials|
|Sage||Brassicas (Incl: Broccoli, Cabbage, Cauliflower), Carrot, Rosemary||Sage repels the Cabbage White Butterfly||Cucumber|
|Silverbeet||Beetroot, Cherry, Lavender, Lovage, Marjoram, Onion||Basil, Wormwood|
|Spinach||Celery, Eggplant, Strawberries|
|Squash||Borage, Lovage, Marjoram, Nasturtium, Peas, Sunflower, Sweet Corn, Tansy||Potato|
|Strawberry||Beans, Borage, Chives, Leek, Lettuce, Marigold (French), Onion, Pyrethrum, Sage, Spinach||Brassicas (Incl: Broccoli, Cabbage, Cauliflower), Brussel Sprouts, Garlic|
|Sunflower||Apricots, Cucumbers, Squash||Beans, Potato|
|Sweet Corn||Beans, Cucumbers, Lovage, Marjoram, Melon, Parsnip, Peas, Potato, Pumpkin, Radish, Squash, Zucchini||Sweet Corn has traditionally been used as “living stakes” for peas. Bad Neighbours roots release substances reducing growth||Cabbage|
|Tomato||Asparagus, Basil, Celery, Borage, Broccoli, Brussel Sprouts, Cabbage, Carrot, Cauliflower, Celery, Chives, Dill, Gooseberry, Grape, Hyssop, Lovage, Mariglod (French), Marjoram, Mint, Nasturtium, Onion, Parsley, Parsnip, Turnip||Marigolds said to repel white fly and root knot nematode. Bad Neighbours roots release substances reducing growth||Apricots, Beetroot, Fennel, Kohl Rabi, Potato, Rosemary, Sweet Corn|
|Turnip||Cucumbers, Lettuce, Nasturtium, Peas, Tomato|
|Yarrow||Most aromatic herbs||When planted along pathways, is said to enhance essential oil production and herb flavour.|
|Zucchini||Lovage, Marjoram, Nasturtium, Sweet Corn|
a couple of general plants that make great companions for other reasons
- Basil helps repel flies and mosquitoes.
- Borage in the strawberry patch will increase the yield.
- Catnip repels fleas, ants and rodents.
- Caraway helps breakdown heavy soils.
- Chamomile deters flies and mosquitoes and gives strength to any plant growing nearby.
- Chives grown beneath apple trees will help to prevent apple scab; beneath roses will keep away aphids and blackspot.
- Elderberry a general insecticide, the leaves encourage compost fermentation, the flowers and berries make lovely wine!
- Fennel (not F. vulgare or F.officionale) repels flies, fleas and ants.
- French Marigold root secretions kill nematodes in the soil. Will repel white fly amongst tomatoes.
- Garlic helps keep aphids away from roses.
- Hyssop attracts cabbage white moth keeping brassicas free from infestation.
- Mint repels cabbage white moth. Dried and placed with clothes will repel clothes moth.
- Nasturtium secrete a mustard oil, which many insects find attractive and will seek out, particularly the cabbage white moth. Alternatively, the flowers repel aphids and the cucumber beetle. The climbing variety grown up apple trees will repel codling moth.
- Pyrethrum will repel bugs if grown around the vegetable garden.
- Rosemary repels carrot fly.
- Rue (Rutus, not Peganum) keeps cats and dogs off garden beds if planted round the borders.
- Sage protects cabbages from cabbage white moth.
- Tansy (Tanacetum, not Senecio) repels moths, flies and ants. Plant beneath peach trees to repel harmful flying insects. Tansy leaves assist compost fermentation.
- Wormwood (Artemesia, not Ambrosia) although it can inhibit the growth of plants near it, wormwood does repel moths, flies and fleas and keeps animals off the garden.