Companion Planting

Below are my notes from various sources on companion planting.

• Basil helps improve flavor of tomatoes.
• Chamomile is often called the plant's physician because it helps to protect them against various pests and diseases.
• Plant chamomile among onions to deter flying insects and improve yield.  After harvesting put the plant in your compost pile to accelerate composting & kill weed seeds.
• Chives are good companions for beets, tomatoes, and carrots because they deter aphids and improve growth and flavor.
• The roots of French marigolds exude a substance that spreads into the soil nearby and kills off the nematodes that attack plant roots. (Especially good to plant near tomatoes & peppers.)
• Garlic is a good companion to celery, radishes, and parsnips because it has a strong smell that deters aphids.
• Marjoram's scent confuses pests and it is a good companion to spring onions, sweetcorn, pumpkins, eggplant, peppers, and courgettes.
• Plant nasturniums between plants because they help to minimize pests by attracting beneficial insects.
• Grow oregano near cauliflower and pak choi as it improves their flavor and repels cabbage beetles.
• Plant parsley among tomatoes and asparagus because it attracts bees and hoverflies.
• Petunias repel many garden pests.
• Rosemary is a good companion for brassicas because it deters cabbage moths, bean beetles, and carrot flies.
• Sage is a good companion to carrots and cabbages because it deters carrot fly and cabbage moth.
• Thyme is good with most vegetables, particularly cabbage, cauliflower, and pak choi because it strengthens the plants, repels aphids and deters cabbage worms.
• Plant radishes between squash plant to repel squash vine borer.
• Potatoes inhibit the growth of tomatoes and squash.
• Beans inhibit the growth of onions.
• Broccoli inhibits the growth of tomatoes.
• Carrots inhibit the growth of dill.
• Borage is reputed to repel tomato pests, and its beautiful blue flowers attract all sorts of pollinating insects.