Grapes require full sun, warm-to-moderate temperatures, plenty of water and quick-draining soil.
In any companion planting situation, choose plants that have similar requirements. This makes every plant's chances of success better.
Grapes do very well when planted with hyssop, basil, beans, geraniums, oregano, clover, peas and blackberries. Clover increases the fertility of the soil for grapes.
Some plants make good companions to grapes just because of their pest-repelling qualities. Because grapes naturally draw pests, planting garlic, chives, rosemary, tansy and mint around the borders of the vineyard is a good idea.
Cold temperatures and frost will damage grapevines, regardless of companion planting.
Never plant grapes with cabbage or radishes.