Secrets of Companion Planting + Popular Planting Combinations

carrots celery chervil cucumbers dill garlic onions radish spinach squash and strawberries.
Marigolds produce chemicals that repel whiteflies Mexican bean beetles root knot nematodes and root lesion nematodes. They are great for planting around fruit trees but should not be planted around beans.
Marjoram grows well next to all plants and is believed to stimulate the growth of plants around it. Asparagus particularly loves asparagus. It is very attractive to bees and other pollinators so it is great planted next to plants that need pollinating like cucumbers and squash.
Mint helps attract earthworms overflies and predatory wasps. It also repels cabbage moths aphids and flea beetles. Mint is invasive so it is best planted on its own in containers around a garden. Do not plant near parsley.
Nasturtiums act as a great trap crop for aphids and they also help get rid of whiteflies cucumber beetles squash beetles Colorado potato beetles and Mexican bean beetles. It is a great companion flower for Brassicas cucumbers melons radishes and tomatoes. They provide good cover for ground beetles and spiders and help attract many different pollinators like bees and butterflies.
Onions love the herbs chamomile and summer savory to improve their flavor. They also work great alongside beets Brassicas carrots dill kohlrabi leeks lettuce strawberries and tomatoes. Do not plant near asparagus or peas. Onions help repel the carrot rust fly hence why they should be planted next to carrots.
Parsley likes to be grown next to asparagus carrots chives corn lettuce onions and tomatoes. Allowing some parsley to go to bloom will help attract hoverflies and predatory wasps.
Parsnips are great when grown next to green peas bush beans peppers tomatoes lettuce rosemary and sage. Some vegetables and herbs do not like parsnip however and that includes carrots celery dill and fennel.
Peas are wonderful companions for beans carrots celery

corn cucumber eggplant parsley parsnip peppers potatoes radish spinach strawberries and tulips. Avoid planting next to onions.
Peppers make good companion plants for asparagus basil carrots cucumbers eggplant endive oregano parsley rosemary squash Swiss chard and tomatoes. Do not plant next to beans Brassicas or fennel.
Potatoes like to be planted next to beets bush beans celery corn garlic marigolds onions and peas. Avoid planting next to asparagus cucumber Kohlrabi melons parsnips rutabaga squash sunflower and turnips.
Radishes make good neighbors for beans beets carrots celeriac chervil cucumber lettuce mint parsnip peas spinach squash and tomatoes. Avoid planting right next to potatoes. Planting radishes around your squashes will allow them to grow better and bloom and will also prevent most pests of squash and cucumber.
Rosemary loves to be planted next to beans Brassicas spinach and carrots. Rosemary helps repel cabbage moths Mexican bean beetles and carrot rust flies.