Lingonberry is an edible berry producing plant and spreading ground cover that is native to the Northern Hemisphere. The popular berry is known to be picked wild and used in a variety of European dishes. Berries are tart but can be cooked, sweetened and turned into Lingonberry jam or syrup. Also used as a folk medicine with benefits similar to cranberries. Lingonberries have been commercially grown in the Pacific Northwest. This is a true cold climate plant with some varieties hardy to Zone 2 but they are limited when it comes to long, hot summers and do not do well in Zones 9 or higher.