Keep your orange tree fruitful and full by knowing when and how to trim it back. Unlike other types of fruit trees, orange trees require little trimming or pruning. Only in the case of an overgrown tree taking over your yard would you need to pull out the pruning shears. Keeping your orange tree trimmed, especially if container grown, improves the aesthetics of the plant and keeps it within its growing bounds.
Cut any "suckers" growing on the main trunk of your orange tree below the slightly enlarged graft joint, usually 1 to 2 feet from the ground. Use the pruning shears to create a vertical cut to remove these suckers as close to the trunk as possible.
Trim dead branches from the tree where they appear in the canopy.
Prune out any thin, twiggy or crossing branches at the main trunk to let more light into the center of the tree.
Slice off branches over 8 feet tall with a diagonal cut to keep the orange tree small enough for harvesting.