City of Denver Approved Arborists

Tree care is an art, a science, and a sport. It requires knowledge of pests, diseases, biology, anatomy, knots, safety, equipment operation, and more. If you have a concern about a small (under 15′ tall) tree, you can call us at (303)722-6262. But if you need help with a larger tree, start here. This list of qualified professionals that can to help prune, diagnose, treat, or remove a tree on your property is vetted and maintained by the City of Denver. Every company on this list meets the city’s requirements for expertise in tree care.