Blueberry is a deciduous shrub of Vaccinium of Ericaceae, with green branchlets, prismatic or cylindrical, usually with rows of hairs; Leaf blade nearly leathery, ovate to elliptic, acute at the apex, cherry-shaped to nearly round at the base, serrated to entire at the edge, dark green, hairless above and hairy below; Raceme, born on the branch last year, with green flowers and no hair.