Here is a table of unfavorable vegetable plant associations.
We do not always know why, but observation takes precedence in this matter. There are things that we know:Alliaceae (garlic, onion, shallot, etc.) secrete bactericides through their roots, their presence is harmful to Fabaceae (legumes) which harbor azotobacter bacteria on their root system (peas, broad beans , bean…). Putting plants of the same botanical family side by side increases the risk of parasites from this family, the case of eggplant and potato both sensitive to the beetle.
And there are things that we don't know, but observation takes precedence in this matter
If the box is empty, it means that I did not find anything in the docs for the cited culture.
Vegetables Unfavorable Associations Garlic Asparagus, beans, peas, cabbageAsparagus Garlic, onionEggplant PotatoBeetroot Bean, leek, carrot, tomatoCarrot BeetCelery Corn, lettuce, Chicory CabbageCabbage Chicory, fennel, strawberry, leek, grapes, garlicCucumber Potato, tomato, radishSquash RadishShallot Beans, peas, cabbageSpinach Fennel Cabbage, beans, parsnips, tomatoFava bean Strawberry CabbageBean Garlic, shallot, fennel, onion, leek, peas, tomatoLettuce ParsleyMash Corn Beetroot, celery, potatoMelon Turnip Onion Beans, peas, asparagus, cabbage, potatoes Parsnips FennelParsley Peas, lettuce, leekDandelion Leek Cabbage, beets, beans, parsleyPeas Garlic, shallot, bean, onion, parsley, potato, tomatoPotato Garlic eggplant, beetroot, cucumber, corn, onion, peasRadish Cabbage, squash, pumpkinSalsify Tomato Beet, cucumber, fennel, bean, pea
