Call John at 510 755 1144 to schedule a consultation on your trees, turf or landscaping’s health, care and safety.  On site and virtual consultations available.

Schedule a virtual or on site consultation with The International Society of Arboriculture Certified Arborist # 5344A and Licensed State of California Agricultural Pest Control Adviser # 074879.

John focuses on the accurate assessment of diseases, insects, pathogens, nutritional issues and structural defects with the recommendations needed to achieve effective and safe mitigation.

With 55 years of experience and degrees in forestry and biology John brings real world hands on science, expertise and insights to his consultations.

John serves urban homeowners and property managers throughout California and the nation with in-person and virtual consultations. His knowledge, hands-on experience, and comprehensive assessment first philosophy provide long term effective tree health care and safety solutions.

Whether you’re facing disease, pests, pollen allergies, or tree safety issues, we perform in-depth assessments and provide effective recommendations without trying to sell you unnecessary services.

Our Services

Disease and Insect Diagnosis and Control for trees, turf and landscaping

Comprehensive assessment to determine the cause and cure of health issues for your trees, turf and landscaping.

Disease and Insect Diagnosis

Tree Structure, Risk and Consequences Assessment

Comprehensive analysis to assess tree risk issues and prescribe effective mitigation measures.

Treatment Guidance & Professional Referrals

We provide expert treatment plans and referrals to qualified contractors and pest control professionals when needed to perform prescribed work.

Virtual Tree Diagnostics

Remote assessments using video or pictures when in-person visits are not cost effective.

Pest, Pathogen, Disease and Structural Assessment

Identify and manage sources for allergies, diseases, existing and new invasive insects such as Emerald Ash Borers and Invasive Shot hole borers.

Why Choose Us?

Extensive hands on field experience and:

Bachelor of Science in Forestry

Bachelor of Science in Biology

International Society of Arboriculture Certified Arborist WE-5344A

International Society of Arboriculture Tree Risk Assessment Qualified.

State of California Agricultural Pest Control License # 74879

State of California Qualified Applicators License # 105998

Master of Science in Park Administration.

Who We Serve

Residential Property Owners

Property Managers

Homeowner Associations

Commercial Properties

FAQs

Do you perform tree removals or pruning?

No, we focus exclusively on assessment, diagnosis and providing recommendations to address the needs of your trees, turf and landscaping. I can perform a search of The International Society of Arboriculture’s database to identify qualified contractors that provide services in your area if needed. I can also provide recommendations and specifications for any work that they need to perform.

Can I schedule a consultation for a virtual assessment of my trees, turf and landscaping remotely?

Yes! Virtual consultations are available.

John Alderson Consulting Arborist

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