Cultivated Highbush blueberries are grown in several regions in North America. Bushes are planted in rows and average 2 – 4 meters tall. Plenty of water is required. Harvest typically ranges from April through August. The berries are either handpicked or harvested mechanically, by an over the row harvester.  In general, the handpicked fruit is for the fresh market, while much of the mechanically harvested fruit is processed. Dried, concentrated or frozen are the most common methods to preserve blueberries.  There many health benefits, but they may be best known for their high antioxidant levels.