Black-Eyed Peas
Another side dish for your allergy-fighting arsenal: Black-eyed peas have some of the highest levels of the B vitamin folate, and a study in the Journal of Allergy and Clinical Immunology found that people with higher levels of folate were less likely to suffer from common allergies, including those to pets, cockroaches, and molds.
How to Grow Black-eyed Peas and Other Beans.