Companion planting consists in providing the best environment possible to the vegetables you grow. As you'll see in this planting guide, some plants attract beneficial insects, such as pollinators, or prevent the growth of harmful grasses. There are also plants that can harm or inhibit the growth of their neighbors.
Beans:
Good companions: Cabbages, Carrots, Cauliflower, Corn, Cucumber, Parsley, Potato, Sage
Bad neighbors: Onion, Garlic, Chives
Beets:
Good companions: Broccoli, Cabbages, Cauliflower, Lettuce, Onion, Potato, Sage
Bad neighbor: Tomato
Broccoli:
Good companions: Beans, Beets, Carrots, Cucumber, Potato
Bad neighbors: Strawberry, Peppers, Tomato
Cabbages:
Good companions: Beans, Beets, Celery, Lettuce, Onions, Peas, Potato, Spinach
Bad neighbors: Garlic, Strawberry
Carrots:
Good companions: Beans, Cucumber, Lettuce, Onion, Peas, Radish, Sage, Tomato
Bad neighbor: Parsley
Cauliflower:
Good companions: Beans, Beets, Celery, Cucumber, Potato, Tomato
Bad neighbors: Strawberry
Celery:
Good companions: Cabbages, Cauliflower, Peas, Tomato
Bad neighbor: Potato
Chives:
Good companions: Asparagus, Carrots, Strawberry, Tomato
Bad neighbors: Beans, Peas
Corn:
Good companions: Beans, Cucumber, Peas, Potato, Radish, Zucchini
Bad neighbor: Tomato
Cucumber:
Bad neighbors: Good companions: Basil, Beans, Cabbages, Carrots, Cauliflower, Corn, Lettuce, Peas, Radish
Bad neighbors: Potato, Sage
Garlic:
Good companions: Cabbages, Tomato
Bad neighbors: Beans, Peas
Kale:
Good companions: Cabbages
Bad neighbor: Strawberry
Lettuce:
Good companions: Beets, Cabbages, Carrots, Cucumber, Onion, Radish, Strawberry
Bad neighbor: Parsley
Onions:
Good companions: Beets, Cabbages, Carrots, Lettuce, Parsley, Parsnip, Spinach, Strawberry
Bad neighbors: Beans, Peas
Parsley:
Good companions: Asparagus, Chives, Corn, Onion, Tomato
Bad neighbor: Lettuce
Parsnips:
Good companions: Beans, Chives, Corn, Onion, Peas, Potato, Radish
Bad neighbors: Carrots, Celery
Peppers:
Good companions: Basil, Beans, Coriander, Onion, Parsley, Tomato
Potato:
Good companions: Basil, Beans, Beets, Broccoli, Cabbages, Cauliflower, Corn, Peas
Bad neighbors: Celery, Cucumber, Tomato
Sage:
Good companions: Beans, Cabbages, Peas, Strawberry, Tomato
Bad neighbor: Cucumber
Tomatoes:
Good companions: Basil, Carrots, Celery, Chives, Onion, Parsley, Peppers
Bad neighbors: Beets, Corn, Potato
Turnips:
Good companions: Peas, Onion
Bad neighbor: Potato
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