By Jackie Carroll We treasure pine trees because they remain green throughout the year, breaking the winter monotony. They seldom need pruning except to correct damage and control growth. Find out when and how to prune a pine tree in this article. When to Prune a Pine Tree Pines are among the easiest trees to maintain because they have a naturally neat shape that seldom needs correction. About the only time you’ll find yourself pruning pine trees is to correct damage from severe weather or vandalism. There’s also a pruning technique you might want to try if you’d like to encourage a compact growth habit. The best time for pruning pine trees is in spring, but you can prune to correct damage any time of year. Although it’s best to take care of broken and mangled branches right away, you should avoid pruning in late summer or fall whenever possible.