The Arborist Journal

    Field Notes from Southern California's Certified Arborists

    Practical, experience-driven articles on tree care, disease management, and preservation — written by the arborists who work on your trees every day.

    How to Protect Heritage and Champion Trees
    Heritage Trees

    How to Protect Heritage and Champion Trees

    Mature, large-canopy trees are irreplaceable assets — but they require specialized care. Learn how to protect heritage trees on your property.

    Joel Brinkman, Arborist on Staff · 8 min read
    Why Ventura County Avocado Trees Decline
    Avocado · Disease

    Why Ventura County Avocado Trees Decline

    Avocado trees are Southern California's most planted fruit tree — and the most commonly misdiagnosed. Learn what actually causes decline.

    Joel Brinkman, Arborist on Staff · 9 min read
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