What Is an ISA Certified Arborist—and Why It Matters for Your Trees

May 28, 2025 | Expert Tips & Advice

ISA Certified Arborist in Seattle, Bellevue or Everett WA

When it comes to tree care, not all “tree guys” are the same. If you’re looking for the highest level of expertise and professionalism, you want an ISA Certified Arborist. At Western Hemlock Tree & Stump Service, our certified team proudly serves Snohomish County with the skill and safety that comes from real credentials.

What Does ISA Certified Arborist Mean?

ISA stands for the International Society of Arboriculture. To become ISA certified, arborists must:

  • Pass a rigorous exam covering biology, pruning, soil, pests, tree risk, and more
  • Have at least 3 years of full-time tree care experience
  • Commit to continuing education and ethics standards

It’s like having a licensed doctor for your trees—not just someone with a chainsaw.

Why Hire an ISA Certified Arborist?

When you hire an ISA certified arborist, you’re hiring someone who can:

  • Identify diseases, infestations, and decay early
  • Safely trim or remove trees with proper technique
  • Preserve valuable trees rather than cutting unnecessarily
  • Give you advice based on science—not guesswork

Safety, preservation, and professionalism—that’s the certified difference.

ISA Arborist Services in Snohomish County

Western Hemlock proudly provides ISA certified arborist services in Snohomish, Everett, Lynnwood, Mukilteo, and surrounding areas. Our team handles:

We’re more than just a tree service—we’re your local tree health experts.

How to Know If You Need an Arborist

Here are signs you should consult an ISA certified arborist:

  • Dead or dying branches
  • Leaning or unstable trees
  • Fungal growth on the trunk or roots
  • Exposed roots or soil upheaval
  • Leaves dropping early or discoloration

If you’re unsure, get peace of mind with a professional inspection.

Talk to a Certified Arborist Near You

When your trees need expert care, trust Western Hemlock. Our ISA certified arborists are ready to inspect, diagnose, and treat your landscape the right way.

📞 Call 425-374-8996 or request a consultation online today.

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