Examples of Plants That Should Not Be Grown Together AsparagusFennel, Garlic, Onions, Potatoes CornBroccoli, Cauliflower, Cabbage, Celery, Eggplant, Fennel, Tomatoes DillCarrots, Tomatoes, Onions, Lettuce, Cabbage FennelAsparagus, Beans, Cilantro, Corn, Cucumber GarlicAsparagus, Beans, Peas, Sage, Strawberries 21 more rows