Trusted Tree Expertise You Can Stand Behind

Evidence based consulting for property owners, attorneys, and organizations across the country, delivered with honesty and genuine care.

Plant Health Care Services, LLC is a plant and tree consulting company based in the Pacific Northwest, with consulting arborist Will Mellott serving clients nationwide. Will specializes in urban forest management for residences, campuses, and municipalities, along with tree preservation and restoration during construction projects. He also provides expert witness testimony, depositions, and detailed reports for litigation and insurance matters involving trees. Clients include homeowners, developers, municipalities, attorneys, contractors, insurance companies, planners, architects, landscape architects, and commercial arborists.
Ornamental Tree
Tree Rings

Trees tell a story if you know how to listen.

Will Mellott has spent more than 30 years learning that language. Whether he is assessing a tree for risk, writing a report for a legal team, or teaching the next generation of arborists, his work is rooted in genuine passion for trees and the people who care for them.

William Mellott
William Mellott Hugging Tree
Musician William Mellott
Meet Will

William 'Will' Mellott

ISA Board Certified Master Arborist and ASCA Registered Consulting Arborist

Will Mellott is the kind of arborist who genuinely loves what he does, and it shows. With more than 30 years of hands-on experience in arboriculture, urban forestry, and plant health care, he brings deep expertise and a refreshingly approachable style to every engagement.

As owner of Plant Health Care Services LLC, Will provides independent tree evaluations, appraisals, risk assessments, consulting reports, expert witness testimony, and deposition support for clients nationwide. He produces thorough, well-documented reports that give attorneys and legal teams the clear, credible foundation they need for depositions and courtroom testimony.

Will is also a builder and a teacher at heart. He has created urban forestry programs from the ground up, including establishing Whitworth University as the second Tree Campus USA in Washington State, and he has spent his career getting people genuinely invested in the trees around them. As a college instructor in urban forestry, he leads campus lectures, hands-on workshops, and community programs that bring the field to life. He understands that a healthy urban forest is not built through technical work alone; it takes education, community buy in, and people who feel connected to the landscape around them.

Will is also the author of the forthcoming book Tree Things: You Need to Know, sharing decades of field wisdom in a way that anyone can connect with. When he is not consulting or writing, you will likely find him playing music, bringing that same warmth and passion to everything he does.

  • ISA Board Certified Master Arborist, BCMA MW-4246B
  • ASCA Registered Consulting Arborist, RCA 837
  • Tree Risk Assessment Qualified, TRAQ
  • Tree and Plant Appraisal Qualified, T-PAQ
  • 30+ Years of Professional Experience
  • Available for Engagements Nationwide
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Committed to Excellence Through Knowledge

  • Formal Education. Educated through the master's level, including a degree in Urban Forestry.
  • 30+ Years in the Field. Three decades of hands on arboriculture and consulting.
  • The Full Credential Set. BCMA, RCA, TRAQ, and TPAQ, backed by dual state licensing.

Knowing what to look for is where every service starts, and it shapes each tree risk assessment, health diagnostic, appraisal, construction impact review, and litigation matter that follows. One tree or an entire property, the scope of the work matches the scope of the problem.

Each engagement begins with a site visit and a thorough evaluation scaled to the question at hand. What you receive is a clear written assessment with findings, recommendations, and the reasoning behind them. Explore the full range of services.

Fewer than 2% of ISA Certified Arborists also hold the Board Certified Master Arborist certification. Will is one of them.​

Certifications, Licenses & Qualifications

  • ISA Board Certified Master ArboristBCMA, MW-4246B
  • ASCA Registered Consulting ArboristRCA #837
  • ISA Certified ArboristSince 2001
  • Tree Risk Assessment QualifiedISA TRAQ
  • Tree & Plant Appraisal QualifiedASCA TPAQ
  • Commercial Pesticide Applicator LicenseWashington (WSDA) and Idaho, ornamental

Education

  • Master of Arts, TheologyWhitworth University, Spokane, WA · 2015
  • Graduate Study, Environmental ScienceOregon State University · 2015
  • Associate of Applied Science, Urban ForestryMSU Bottineau, Bottineau, ND · 2003
  • Bachelor of Science, HumanitiesGrace University, Omaha, NE · 1990
Studied plant biology at Whitworth University and completed 3,000+ hours of continuing education through the International Society of Arboriculture, plus graduated from the ASCA Consulting Academy (2021) and the Master Gardener Training Program (2020).