The way to prune raspberry plants is to remove the canes of summer-bearing varieties by cutting them off at the ground after they bear fruit. Note: Dispose of these canes because they often harbor insects and disease. In the spring, remove the dead, weak and small canes, leaving canes at least six inches apart in the hedgerow. Remove winter-killed tips of the remaining canes. Mow the canes of fall-bearing varieties to ground level after the fall harvest.

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