John Bornsworth



Environmental Planner & Board-Certified Master Arborist

Trees are a repository of their entire natural history.

John Bornsworth, principle and founder of Peninsula Environmental Group, Inc. is a resourceful and savvy environmental planner and urban forester. John is a Board Certified Master Arborist, Municipal Arborist and recipient of the Permaculture Design Certificate with fifteen years of diverse experience. He currently sits on the Washington State Department of Natural Resource’s Washington Community Forestry Council as an executive advisor of commercial arboriculture.

Mr. Bornsworth provides leadership and strategy to an interdisciplinary team of practitioners and scientists. He and his team develop goal orientated solutions to generate co-benefits within urban and natural ecosystems. With an integrated, holistic approach to urban ecology and green space management, he brings new perspectives to landscape design, urban ecosystem management and urban & community forestry management. Mr. Bornsworth is the on-call arborist for multiple communities, engineers, developers and tree services around the Western Washington.

Certifications and Licenses (Current and lapsed):

• Member, American Society of Consulting Arborists (ASCA)
• International Society of Arboriculture (ISA) Board Certified Master Arborist # PN-7955BM
Washington Community Forestry Council, Executive Advisor
• ISA Certified Arborist Municipal Specialist
• ISA Tree Risk Assessor Qualified• Graduate, Community Tree Management Institute – WA & OR State University
• Graduate, ASCA Consulting Arborist Academy – 96% final report
Washington Department of Agriculture Commercial Pesticide Operator with aquatic, horticultural and right-of-way endorsements. License #87736.
• Qualified to use Washington Department of Ecology Wetland Rating System
• Wilderness First Responder, 2009-2017
• Former Helicopter Crew Member (HECM) – National Wildfire Coordinating Group, 2009-2014

Presentations, classes, speaking events, talks:

• Benefits of Urban Trees
• Watershed Health in Arboriculture
• Community Forests and Native Forests Tour
• Engaging Private Residences in Invasive Plant Management
• Using Science in our Daily Lives
• Tree & Orchard Pruning
• Lead trainer of 4-day Arboriculture & Tree Climbing Workshop for Washington Department of Ecology

Looking for a tree doctor or biologist?

Get in touch with John today.