Lowbush. The most cold-hardy blueberries are lowbush types (Vaccinium angustifolium, USDA Hardiness Zones 3 through 6), growing no more than about 8 to 18 inches high. Snowfall covering these low shrubs protects them from winter cold.
Lowbush: 2 to 4 feet tall, 3 to 4 feet wide.
Rabbiteye: Anywhere from 6 to 30 feet tall and 6 to 10 feet wide. Unlike the other two, the berries on the Rabbiteye varieties will cluster toward the tips of the branches.
Lowbush blueberry (Vaccinium angustifolium), a prostrate, very twiggy shrub, tolerates cold best among blueberry species, but it has less shade tolerance. It needs a good six hours of sunlight, which makes it perfect for a green roof.
Lowbush blueberries (Vaccinium angustifolium) generally grow no more than 18-inches in height. Propagated from shoots spread through underground runners, lowbush blueberries form low mats of plants that produce best on a two-year cycle.
Lowbush blueberries range in height from 1 to 2 feet tall, highbush blueberries are maintained between 4 and 7 feet, and rabbiteye blueberries can reach heights greater than 9 feet.
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Grow a grapevine over an arbor or pergola. Plant lowbush blueberries or strawberries in a bed near the house. Even container growing is possible, giving northern gardeners a chance to grow citrus, figs and other frost-tender fruit trees.
Other types of blueberries, such as highbush (Vaccinium corymbosum) grow in Michigan, North and South Carolina, Oregon, Virginia and Washington, while lowbush blueberries (V. angustifolium) are native to Maine and Alaska - just to name a few.
 See also: Plant, Highbush, Gardening, Rabbiteye, Native
  
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