Did you know? Bay leaves, either fresh or dry, are added to soups, stews, tomato sauces, and casseroles to provide an earthly flavor. The elliptical glossy green leaves grow on evergreen bay laurel trees, which also produces clusters of yellow or greenish-white star-shaped flowers. The tree, native to Asia minor, is now found throughout the Mediterranean. The leaves which are rich in immunity-boosting vitamin C, antioxidant vitamin A, folic acid, B complex, potassium, calcium, manganese, copper, and selenium. Natural healers used bay to cure stomach ulcers and flatulence. The essential oils can treat arthritis, reduce congestion, and help the body process insulin, thus lowering blood sugar.