Companion Planting

Companion plantingCompanion planting is the means by which a gardener plants particular fruits or vegetables near each other in order to naturally increase productivity and ward off pests. The best known example of this is the Native American ‘Three Sisters’ method of planting Corn, Beans and Squash together. The beans fix nitrogen in the soil, improving the fertility of all the plants while using the corn as support for climbing. The squash, with its large leaves, acts as a mulch for the other two, keeping the soil moist and deterring pests with its spiny stems – three crops in one spot, nourishing each other.

Of course it works both ways. There are some plants which shouldn’t be planted together because they attract additional pests or diseases, or take all the nutrients out of the soil, so it’s equally as important to know which plants should be kept apart.

The below table is a (non-definitive) chart of which fruits and vegetables should and should not be planted together.

Plant Beneficial Companions Plants to Avoid
Apple Chives, Clover, Garlic, Leek, Cedar
Asparagus Basil, Coriander, Parsley, Tomatoes Garlic, Onion, Potato
Basil Asparagus, Oregano, Peppers, Tomatoes Rosemary, Rue, Sage
Beans Beets, Brassicas, Carrots, Corn, Cucumbers, Dill, Lettuce, Radish, Rosemary, Spinach, Strawberries, Summer Savory Fennel, Garlic, Leeks, Onion, Peppers, Tomatoes
Beetroot Basil, Brassicas, Chives, Garlic, Lettuce, Mint, Onions, Beans
Blueberry
Broccoli Celery, Chamomile, Dill, Garlic, Onions, Rosemary, Sage Oregano, Peppers, Strawberries, Tomatoes
Cabbage Beetroot, Dill, Garlic, Onions, Rosemary Beans, Peppers, Strawberries, Tomatoes
Carrots Beans, Chives, Garlic, Leeks, Lettuce, Onions, Rosemary, Sage, Tomatoes Dill, Parsnip, Radish
Celery Carrot, Corn, Parsley, Parsnip,
Chamomile Basil, Cabbage, Cucumber, Onion
Chives Apples, Brassicas, Carrots, Tomatoes Beans, Peas
Coriander Beans, Peas, Spinach
Corn Beans, Cucumbers, Melon, Parsley, Peas, Potato, Squash, Celery, Tomato
Cucumber Beetroot, Carrots, Dill, Peas, Radish Sage, Tomato/Potato?
Dill Cabbage, Corn, Cucumbers, Lettuce, Onion Carrots, Tomatoes
Fennel Dill Avoid most other plants
Garlic Apple, Beetroot, Broccoli, Cabbage, Carrots, Tomatoes Asparagus, Beans
Grapevine Beans, Blackberry, Brassicas, Chives, Peas
Leek Apples, Carrots, Celery Beans, Peas
Lettuce Beans, Carrots, Radish Cabbage, Celery, Parsley
Melon Corn, Radish Potato
Mint Brassicas, Tomatoes
Onions Broccoli, Cabbage, Carrots, Tomatoes Beans, Parsley, Peas
Oregano Basil, Peppers, Tomatoes
Parsnips Garlic, Onion, Pea, Pepper, Potato, Radish Carrot, Celery
Peas Beans, Carrots, Celery, Corn, Cucumber, Parsley, Radish, Spinach, Strawberry Chives, Grapes, Onions, Potatoes
Peppers – chilli
Peppers – sweet
Basil, Carrots, Onions, Parsley, Tomatoes, Apricot, Beans, Broccoli, Cabbage, Cauliflower, Fennel
Potato Brassicas, Carrot, Celery, Corn, Peas, Onion Asparagus, Cucumber, Fennel, Parsnip, Squash, Tomato
Radish Beans, Beetroot, Carrots, Cucumber, Lettuce, Melons, Parsnip, Peas, Spinach, Squash Brassicas, Turnips
Raspberry Tansy
Rosemary Beans, Cabbage, Carrots, Sage Basil
Sage Beans, Cabbage, Carrots, Rosemary Onion
Spinach Beans, Peas
Squash Beans, Corn, Radish Potato
Strawberries Beans, Borage, Lettuce, Onions, Peas, Thyme Brassicas
Tomatoes Asparagus, Basil, Carrots, Celery, Chives, Garlic, Onion, Oregano, Parsley, Peppers Beetroot, Brassicas, Corn, Dill, Fennel, Peas, Potatoes,
Thyme Brassicas
Basil, Brassicas, Chives, Garlic, Lettuce, Mint, Onions,