Blueberries are sweet, edible dark-blue berries of either high-growing or low-growing bushes. Blueberry bushes usually bear fruit at the height of the growing season, although their fruiting times are affected by external factors such as latitude and altitude, meaning that the bushes can fruit from as early as May, or as late as August. Most of the blueberries sold for human consumption today are sourced from eastern or northern North America (especially Maine, which produces…