seasonal fruits are either apples or...apples. Citrus growers haven't gotten a really tasty crop yet, and 90 percent of what's in your grocery store has been shipped in from far, far away, devoid of any taste or nutrition. But, unless you're branching out to specialty grocery stores, you could be missing out on some of the most nutritious, unique fruits—grown in the U.S.—that are available this time of year. Certain varieties of tropical and citrus fruits, which are grown somewhat locally in places like Florida and Hawaii, have the highest levels of heart-healthy antioxidants of any fruit, so you can still make your heart happy without having to pollute the planet with fruit flown in from another hemisphere.