- Some plants give off odors or chemicals that repel insects
- Some plants attract beneficial insects
- Some pants attract insect that will pollinate other pants.
- And some plants lure harmful insects away from valued plants
- Nasturtium repels aphids, squash bugs and striped pumpkin beetles, meaning it is great in a vegetable garden and mice in containers to keep other plants healthy.
- Catnip repels ants and flea beetles. I like it out in large garden patches that are away from the house in sandy soil which ants love.
- Chives is another plant that discourages aphids. It is also good at suppressing fungus. Perfect addition to containers.
- Feverfew will attract aphids, so you can place it near flowering plants aphids normally enjoy so they bother it instead.
- Yarrow attracts hoverflies lady bugs and wasps, all of which prey on aphids.
Petunias, tomatoes, asparagus, peppers, oregano
Common rue, sage & rosemary (deadly to rosemary)
Chamomile or anise
Tomatoes, cabbage (repels tomato hornworms & cabbage worms) strawberries, squash, fruits
Basil, wheat, onions, cabbage, cucumber
Tomatoes, carrots, apple trees, roses, mums, sunflowers (repel aphids)
Anise, caraway, spinach, dill (repels spider mites, you can even make a tea with the seed for a treatment)
Lettuce, cabbage, sweet corn, cucumbers,
Carrots, caraway, lavender, tomatoes (attracts hornworm) will cross pollinate with fennel
Deters rabbits and Japanese beetles fruits trees (apple pear and peach), roses, cucumbers, lettuce, celery
Cuttings and mulch made from mint are great around turnips, cabbage, broccoli, and mustard. Even works with mice.
Sage, cabbage, beans, carrots by deterring cabbage moths and bean beetles
Beans, broccoli, cauliflower, cabbage and carrots
Rue, cucumbers, onions
Especially eggplant, but good anywhere in the garden for it repelling qualities
Spread 20 feet of roots whose smell repels moles and gophers.
Health improver for almost all plants
Deters Japanese beetles in roses and raspberries
Deters flying insect especially those attacking fruit trees, roses and raspberries
Dogs and other animals avoid this and stay away from your garden
Nematodes in the ground around any plants
Companion Plants by Professor Stuart B. Hill Department of Entomology Macdonald College
Down Garden Services: Companion Planting
Gardening Know-How: Companion Planting in your Herb Garden
Rodale’s Successful Organic Gardening: Companion Planting by Susan McClure and Sally Roth (Rodale Press, 1994)
Carrots Love Tomatoes: Secrets of Companion Planting for Successful Gardening by Louise Riotte (Storey Publishing, 1998