Blackcurrant is often affected by mites, which can cause disease and stop fruit production. Plant garlic and onions under the bush; they release biologically active substances called phytoncides that repel mites.
Gooseberry can fall victim to sawflies and currant borers. Those pests are deterred by the scent of tomatoes. Prune tomato suckers and place them around the gooseberry bushes instead of throwing them away.
Apple trees are vulnerable to codling moths. Plant dill and tomatoes around the tree to create a protective zone.
Strawberries attract slugs. Plant rows of parsley around the garden to help boost your yield.
Raspberries spread rapidly, sending out new shoots. Plant a row of sorrel along the edge to act as a natural barrier.
Carrots are helped by nearby onions, which protect them from root maggots and from white and gray mold.
Potatoes are prone to Colorado potato beetles. Plant beans in the potato rows to provide some protection.
Beans are disliked by moles. Plant a few bean bushes in the area if you have a mole problem.
