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When to Fertilize Blackberries in North Georgia

Blackberries grow in both bush and trailing or vining, varieties and can reach 10 feet in both height and spread. To reach their mature height and full fruit-bearing ability, blackberries require some specific care at planting and during growth. This is true even in the warm growing regions of Georgia.
  1. Georgia Growing Zones

    • Georgia covers USDA Growing Zones 6 to 8 and offers the cool winters and bright, sunny summers favored by blackberries. According to the Louisiana State University Ag Center, blackberries grow very well in both Louisiana and Georgia.

    Planting

    • Blackberries require nutrition from the start and do best when planted in a mixture of quick-draining soil and organic compost. Gardeners in Georgia should plant their blackberries with this initial feeding in early spring, for a full summer of growth.

    Fertilizer

    • The LSU Ag Center recommends feeding blackberries in early spring, with 8-8-8, 10-20-10 or 13-13-13 fertilizer. In north Georgia, gardeners should feed their blackberries after the last frost, which may occur as late as May 21 in Blairsville. This spring feeding gives blackberries the energy they need for spring growth and summer blooming.

    Considerations

    • Feeding blackberries too early may result in spring growth when there is still frost on the ground. Any growth at that time will die and damage summer blooming. North Georgia gardeners must be careful not to fertilize too early in the year.