| Good Companions | Bad Companions | |
| Apples | Chives, Horsetail (Equisetum), Foxgloves, Wallflowers Nasturtiums, Garlic, Onions | Grass, Potatoes |
| Apricots | Basil, Tansy, Southernwood | Tomatoes, Sage |
| Asparagus | Tomatoes, Parsley, Basil | |
| Basil | Tomatoes, Asparagus, Parsley, Apricots | |
| Beans | Carrots, Cucumbers, Cabbages, Lettuce, Peas, Parsley Cauliflower, Spinach, Summer Savory | Onions, Garlic, Fennel, Gladioli, Sunflowers, Kohlrabi |
| Beans, Broad | Potatoes, Sweetcorn, Dill | |
| Beans, Dwarf | Beetroot, Brassicas, Carrots, Cucumbers, Dill, Lettuce, Potatoes, Radish, Spinach, Sweetcorn, Strawberry, Summer Savory | Onions, Garlic, Fennel, Gladioli, Sunflowers, Kohlrabi |
| Beetroot | Onions, Silverbeet, Kohlrabi, Lettuce, Cabbage Dwarf Beans | Tall beans |
| Borage | Strawberries | |
| Brussels Sprouts | Beans (Dwarf), Beetroot, Celery, Cucumber, Onions, Rhubarb, Chamomile, Dill, Oregano, Sage, Marigold, Nasturtium | Strawberries |
| Broccoli | Beans (Dwarf), Beetroot, Celery, Cucumber, Onions, Rhubarb, Chamomile, Dill, Oregano, Sage, Marigold, Nasturtium | Strawberries |
| Cabbages | Beans, Beetroot. Celery, Mint, Thyme, Sage, Onions Rosemary, Dill, Potatoes, Chamomile, Oregano Hyssop, Southernwood, Nasturtiums, Tansy, Coriander | Rue, Strawberries, Tomatoes, Garlic |
| Capsicum (Sweet Peppers) | Amaranth, Basil, Beans (Dwarf), Carrots, Lovage, Marjoram, Okra, Parsley, Geraniums | Fennel, Kohlrabi, Tomatoes |
| Carrots | Peas, Radishes. Lettuce, Chives, Sage, Onions, Leeks | |
| Carnations | Hyacinths | |
| Cauliflower | Celery. Beans, Tansy, Nasturtiums | Strawberries |
| Celery | Tomatoes, Dill. Beans, Leeks, Cabbage, Cauliflowers | |
| Chamomile | Mint, Cabbages, Onions | |
| Chervil | Dill, Coriander, Radish | |
| Chilli (Hot Peppers) | Basil, Oregano, Parsley, Rosemary | |
| Chives | Parsley, Apples, Carrots, Tomatoes | |
| Citrus | Guava | |
| Coriander | Dill, Chervil, Anise, Cabbages, Carrots | Fennel |
| Cucumbers | Potatoes (early crop only), Beans, Celery, Lettuce Sweet Corn, Savoy Cabbages, Sunflowers, Nasturtiums | |
| Dill* | Carrots, Tomatoes, Cabbage, Fennel, Coriander | |
| Fennel | Dill | Beans, Tomatoes, Kohlrabi, Coriander, Wormwood |
| Foxgloves | Apples, Potatoes, Tomatoes | |
| Fuchsias | Basil, Gooseberries, Tomatoes | |
| Garlic | Roses, Apples, Peaches | Peas, Beans, Cabbages, Strawberries |
| Geraniums | Grapevines | |
| Gladioli | Strawberries, Beans, Peas | |
| Grapevines | Geraniums, Mulberries, Hyssop, Basil, Tansy | |
| Guava | Citrus | |
| Horseradish | Fruit trees, Potatoes | |
| Hyacinth | Carnations | |
| Hyssop | Grapevines, Cabbages | Radishes |
| Kohlrabi | Beetroot, Onions | Tomatoes, Beans, Fennel |
| Leeks | Carrots, Celery | |
| Lettuce | Carrots, Onions, Strawberries, Beetroot, Cabbages Radishes, Marigolds | Parsley, Celery |
| Marigolds | Lettuce, Potatoes, Tomatoes, Roses, Beans | |
| Melons | Sweet Corn | |
| Mint | Cabbages, Chamomile | Parsley |
| Nasturtiums | Apples, Cabbages, Cauliflowers, Broccoli Brussels Sprouts, Kohlrabi, Turnips, Radishes Cucumbers, Zucchini | |
| Onions | Carrots, Beetroot, Silverbeet, Lettuce, Chamomile Kohlrabi, Summer Savory | Peas, Beans |
| Oregano | Cabbages | |
| Parsley | Tomatoes, Asparagus, Roses, Chives | Potatoes |
| Parsnips | Peas, Potatoes, Peppers, Beans, Radishes, Garlic | Carrots, Celery, Caraway |
| Peaches | Tansy, Garlic, Basil, Southernwood | |
| Pears | Grass | |
| Peas | Potatoes, Radishes, Carrots, Turnips | Onions, Shallots, Garlic, Gladioli |
| Potatoes | Peas, Beans, Cabbage, Sweetcorn, Broad Beans Green Beans, Nasturtiums, Marigolds, Foxgloves Horse Radish, Egg Plant | Apples, Cherries, Cucumbers (with any but early crops) Pumpkins, Sunflowers, Tomatoes, Raspberries, Rosemary |
| Pumpkins | Sweetcorn | Potatoes |
| Radishes | Lettuces, Peas, Chervil, Nasturtiums | Hyssop |
| Raspberries | Tansy | Blackberries, Potatoes |
| Roses | Garlic, Parsley, Onions, Mignonette, Marigolds | |
| Rue | Sage, Basil | |
| Sage | Carrots, Cabbages, Strawberries | Basil, Rue, Wormwood |
| 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 |
| Spinach | Broad Beans, Cabbage, Cauliflower, Celery, Eggplant, Onion, Peas, Strawberries, Santolina (Cotton Lavender) | |
| Squash | Sunflowers, Sweetcorn | |
| Strawberries | Borage, Lettuce, Spinach, Sage, Pyrethrum | Cabbages, Cauliflowers, Brussels Sprouts Gladioli, Tomatoes, Broccoli, Garlic |
| Sunflowers | Squash, Cucumber | Potatoes |
| Sweetcorn | Broad Beans, Potatoes, Melons, Tomatoes, Cucumber, Squash, Tansy | |
| Tansy | Cabbage, Roses, Raspberries, Grapes, Peaches | |
| Thyme | Cabbage family | |
| Tomatoes | Asparagus, Celery, Parsley, Basil, Carrots, Chives Marigolds, Foxgloves, Garlic, Sweetcorn | Rosemary, Potatoes, Kohlrabi, Fennel Apricots, Strawberries, Dill* |
| Turnips | Nasturtiums, Peas, Beans, Carrots, Chicory, Chives, Spinach | Potatoes, Tomatoes |
| Wallflowers | Apples | |
| Wormwood | All other plants | |
| Zucchini | Nasturtiums |
Source: Companion Planting in Australia – Brenda Little
For more information see the article – What is Companion Planting and How Does it Work?