Answer: Boxwoods are typically pruned in the spring, just as new growth begins. You should be able to lightly shear your boxwood at this time of year - just don't remove a great deal of the plant or it may have trouble replacing the lost foliage because of the heat. If you need to cut them back more than a few inches, wait until next spring so the new growth can fill in right away and protect the exposed stems, leaves and branches from sunburn. Best wishes with your landscape.
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