Download our Companion Planting info sheet here.
Companion planting is the grouping of plants together in a combination that is beneficial to themselves or other plants around them. Companion planting can help repel unwanted insects or attract beneficial insects, nourish the soil, help control diseases. Generally improving growing conditions.
Discourage ants and aphids
Plant penny royal and tansy throughout the garden. Ants farm aphids, by carrying them from plant to plant as they are very fond of the sweet substance which aphids secrete. The pungent smell of penny royal and tansy will also deter ants from coming into the house. Plant large clumps near entrances. Coriander will help keep aphids away from your garden.
Encourage apple trees
Apple trees are more productive and disease resistant if a good number of chives are grown under them.
Encourage apricot trees
Apricot trees benefit from planting basil and tansy nearby.
Asparagus grows particularly well if it is surrounded by parsley.
Basil is one of the most valuable herbs in the garden. Ornamental basil, sweet basil and bush basil are all beneficial. Bees love it and therefore it brings fertility to the whole garden. It also deters aphids, fruit fly and the common house fly.
Cabbages grow better when mint, thyme, sage, rosemary and dill are planted around them. Never grow rue near cabbages.
Encourage your vegetable garden
Borage is rich in organic potassium, calcium and natural minerals. It should always be grown near cucumbers, tomatoes, squash, and strawberries.
Encourage celery and carrots
Celery likes to have dill planted nearby. Carrots like chives, sage and coriander planted between their rows.
Discourage birds, mice and slugs
When growing plants from seed, mix dried herbs of any variety to discourage birds, mice and slugs from eating them while they are germinating.
Pots of garlic, which can be easily moved around, will repel mosquitoes. Great for when you are entertaining outdoors.
Encourage bees to your garden
Planting lemon balm and lavender will attract bees and improve the growth of all vegetables, especially tomatoes.
Discourage fleas by planting fennel near troublesome areas.
Encourage healthy plants
Lovage, marjoram and tarragon planted freely through vegetable and flower gardens will improve the health of all nearby plants.
Nasturtium helps repel wooly aphid and many other garden insects.
Discourage slugs and snails
Rosemary and rue repel slugs and snails so plant them by your more tender plants.
Garlic and chives planted near roses help repel aphids and other insects whilst enhancing the fragrance of the rose flowers.
Discourage white fly
Marigolds planted throughout the garden will help discourage whitefly.
The above table is reprinted with permission from The Tui NZ Vegetable Garden by Rachel Vogan, published by Penguin NZ. Copyright © Penguin Group (NZ), 2012.