Pine trees thrive throughout the United States. Some species of pine trees grow exclusively in the northern parts of the United States, while others need the warmer temperatures of the southern United States. Neglect or improper treatment of pine trees causes them to become unsightly and sickly. While pine trees normally do not need pruning, trim pine trees occasionally as part of a regular tree maintenance program.
Prune off all dead, diseased and damaged limbs with your pruning saw. These limbs are of no benefit to the tree any longer and can cause damage to the tree and nearby structures.
Prune the new central leader, or "candle" of the pine tree with your pruning shears. The central leader is the vertical branch that grows straight up off the top of the pine tree. Cut it back to a 8- to 14-inch long stub.
Prune the side branches around the central leader. These should be pruned 4 to 6 inches shorter than the central leader.
Prune down the rest of the pine tree. Each branch should be pruned longer than the one above it to form a uniform pyramid shape in the pine tree.