Why ISA Certification Matters When Hiring a Tree Service

What Is ISA Certification?

The International Society of Arboriculture certifies arborists who have passed a comprehensive exam covering tree biology, diagnosis, pruning, safety, and urban forestry. Certified arborists must also complete continuing education to maintain their credential. It is the industry standard for tree care professionals.

Why It Matters for Your Trees

An uncertified tree worker may know how to operate a chainsaw, but understanding how trees grow, heal, and respond to pruning is what separates a professional from someone who causes long-term damage. Improper cuts, topping, over-pruning, and incorrect species identification are common mistakes made by unqualified companies.

Protecting Your Investment

Mature trees add 10-15 percent to property values. Improper care can kill or disfigure a tree that took decades to grow. Hiring an professional arborist ensures your trees receive science-based care that promotes health and longevity, not just a quick trim.

What to Ask When Hiring

Ask for the arborist's ISA certification number and verify it online. Confirm they carry liability insurance and workers compensation. Get a written estimate with specific details about what will be done and why. Green Image Tree Service employs professional arborists on every job — contact us for a free consultation.