Answer: The mature size of a blueberry bush depends on the specific variety you are growing. Some can mature in the eight foot tall range. You do not want to prune them for height. Pruning is done beginning about the fifth year or so to help keep the plant vigorous and thinned to allow light to penetrate the center of the plant. Pruning is usually done in late winter, so probably early March for you. Here is information on growing blueberries (including pruning) that you may find helpful. You may need to cut and paste the complete url into your browser to make it work correctly.
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