Education & Helpful Links Possible Allergen Plant and Food Cross-Reactivity A person allergic to a plant may be allergic to related foods. This is a list of possible food and plant relationships.Apple – pear and quinceBirch, alder and hazelnut – almonds, apples, apricots, carrots, celery, cherries, chestnuts, coriander, fennel, kiwi, hazelnut, nectarines, parsley, parsnips, peaches, pears, peppers, plums, potatoes, prunes, soy and wheatBuckwheat – rhubarbCashews – pistachio and mangoCitrus – orange, lemon, lime, grapefruit and tangerineCola nut – cocoa and colaFungi – yeast and mushroomGinger – turmeric and cardamomGoosefeet – beet, spinach and Swiss chardGourd – watermelon, cucumber, cantaloupe, pumpkin and squashGrass (grains) – corn, wheat, rice, oats, barley, rye, brown cane sugar, orangesmolasses, bamboo shots, sorghum, potatoes, celery, tomato, kiwi and melonsHeath – blueberry and cranberryLaurel – cinnamon, bay leaf, avocado and sassafrasLily – onion, garlic, asparagus, chives, sarsaparilla and leekMallow – okra and cottonseedMint - peppermint, sage, thyme, spearmint, basil, balm, bergamot, horehound, marjoram, savory and rosemaryMugwort – celery, coriander, carrots, fennel, parsley and sunflowerRagweed – bananas, melons, cucumber and zucchini