Overgrown boxwoods... pruning advice, please
My son and his wife just moved. They have a row of boxwoods that are about 5 ft. tall, growing along the front porch. The goal is to be able to sit on the front porch and see something besides that wall of boxwood hedge. How hard can they prune these shrubs without killing them? Can they take them down to 3ft? This would leave the top of the hedge bare. Will boxwoods fill in with new growth? The boxwoods are at least 30 years old and are currently well shaped as a squared off hedge. The boxwoods are growing in an east exposure in Ft. Worth, Texas. Zone 7b/8a.
I appreciate any guidance you can give me because they asked me for advice and I don't know anything about boxwoods.