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Blackberries That Grow in Zone 3

Most blackberries prefer warm climates. As floricanes, their growing cycle depends on last year's canes to yield this year's fruit. In cold regions, blackberry canes often freeze and break, and are, thus, unable to produce fruit the following year.

The Chester is a well-established thornless floricane blackberry variety, known for its cold weather durability. The Chester grows well in Zone 4 and is reasonably successful in Zone 3.

Two recently developed thorny varieties are the Prime-Jan and Prime-Jim, which are primocane blackberries. Unlike other blackberries which produce fruit on canes from the previous year's growth, primocanes produce fruit on the current year's canes.

  1. Chester Blackberries

    • The Chester blackberry is considered the most winter hardy thornless blackberry. It is a late season plant, which yields large, mild-tasting berries.

    Prime-Jan Blackberries

    • The Prime-Jan blackberry was recently developed by the University of Arkansas. It is a thorny variety producing up to two crops per season (an early crop in June and another crop before the fall freeze). Prime-Jan produces a good-tasting, medium sized berry.

    Prime-Jim Blackberries

    • The Prime-Jim blackberry is another recent introduction from the University of Arkansas. It grows similarly to the Prime-Jan blackberry and also produces two crops per season. The fruit is similar in size to the Prime-Jan berry and other thorny blackberries, but is slightly less sweet (8 percent average sugar content, compared to the Prime-Jan's 9.6 percent.)

      Another primocane blackberry under development is the Prime-Ark 45. This blackberry is sweeter than the Prime-Jan (at about 10 percent average sugar content, but is still under testing for most suitable regions of planting.

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Growing Berries
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