Companion Planting using herbs works in a number of ways, firstly some herbs deter insects and pests, some are said to improve growth and flavor and others act as a 'pest trap' they attract insect pests away from the main crop. So which does which.
Here we have it, a list of herbs that are commonly used as companion plants. The trick is to know what to plant close to each other and what to plant a distance away and why.
List of Companion Plants
Basil is an excellent companion plant for tomatoes, many gardeners say it makes the tomatoes taste better, other say it also repels flies and mosquitoes. Either way, in the kitchen hay work well together.
Borage works well with tomatoes as well, said to improve flavour and deter pests, also works well with strawberries and pumpkins
Garlic, well what can we say great near roses, raspberries, tomatoes, Eggplant, Spinach and Cabbages but not Beans and Peas
Nasturtium are a trap crop, it will attract aphids and lots of other pests away from the main crop. Excellent near cabbages and its relatives.
Pot marigold an all round deterrent to insect pests
Tansy is another plant that deters flying insect pests, used beneath roses and around raspberries
Horseradish is often planted near potatoes, usually in containers . Also good near strawberries, rhubarb and asparagus.
Mint is another planted near tomatoes and cabbages, deters ants and aphids and cabbage moth.
Tarragon is an other 'all rounder' deters many insect pests
Geraniums and Petunias also attract insects, so plant close to but not in the vegetable garden
Wormwood helps keep animals ay bay, used as a border
Fennel is not a companion plant at all, it seems to inhibit growth and should be grown by itself. However it does attract many beneficial insects to the garden including ladybugs. Its also a flea repellent, so as the saying goes 'grow some fennel for kennel'.