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About Us
About John Alderson Consulting Arborist
Passionate Care. Proven Experience
With over 55 years of hands-on arborist expertise, John Alderson is dedicated to the long-term health of your trees and landscape. From pest control to soil health, we provide personalized, science-backed solutions to keep your greenery thriving across Northern California.
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Tree Risk Assessments -
Disease & Pest Diagnosis -
Soil & Root Solutions -
Fungus & Pathogen Treatment -
Certified Arborist & Advisor
More About Us
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Projects Completed
Why Choose Us
We Have The Perfect Solution For Your Landscape Problems
With over 55 years of experience, John Alderson delivers expert, science-based solutions tailored to your unique tree and landscape needs. From diagnosis to long-term care, we’re committed to preserving the beauty, safety, and health of your environment.
Certified & Licensed Expert
State-licensed pest control advisor and certified tree risk assessor.
Accurate Diagnosis & Treatment
We use proven methods to identify and solve tree health issues.
Local & Trusted
Proudly serving Northern California communities with integrity.
55+ Years of Experience
Decades of hands-on arborist knowledge you can rely on.
Committed to Tree & Landscape Excellence
Delivering trusted care, precision diagnosis, and long-term solutions to keep your trees and property healthy, safe, and thriving.
Tree Risk Assessment
We evaluate tree structure and stability to prevent hazards and ensure safety.
Professional Team
Work with certified, licensed, and highly experienced arborist professionals you can trust.
Save Time & Money
We provide efficient, cost-effective solutions that reduce long-term maintenance expenses.
Pest & Insect Control
Identify and treat infestations with safe, targeted methods that protect your trees and the environment.
Soil & Root Health
Comprehensive soil testing and treatment plans to strengthen roots and support growth.
Fungus & Disease Treatment
Quick and accurate diagnosis with proven treatments to restore tree health and prevent damage.
Let’s make the world a better place.
By caring for trees, improving landscapes, and using sustainable practices, we’re helping create healthier communities and a greener future—one property at a time.