I have beautiful, healthy Norfolk Pine that has grown close to 7 ft tall & about 6 ft wide. Can I trim off the top without causing damage to this tree??
Unfortunately, Norfolk Pine does not take well to pruning. The tip is the growing point of your tree and once you cut that off, your tree will still grow sideways but not upright. It will be misshapen and loose its pyramidal shape. Sometimes a tree can send out another tip from a different growing point. Cut only the lower dead branches.
More info on Norfolk pine care.