Blenheims have been grown in the region for more than 100 years but have become harder to find in recent decades, displaced by more early ripening, bigger and heartier apricot varieties. Because they are delicate and hard to ship, you're most likely to find Blenheims at the farmers market. When they are in season, Blenheims are notoriously delicious fresh, and work well for canning, drying, baking or making jams.