Southern California Tree
Resource Center
Welcome to the Southern California Tree Resource Center. Whether you're trying to diagnose a sick tree, learn about Plant Health Care, understand local tree species, or explore seasonal maintenance tips, our Certified Arborists have created this resource library to help homeowners, estate managers, HOAs, and commercial property owners make informed decisions about their trees.
Start Your Tree Care Journey
Not sure where to begin? Choose the topic that best describes your situation:
My Tree Looks Sick
Diagnose symptoms and diseases
I Want Healthier Trees
Explore Plant Health Care
I Need Tree Service
Trimming, removal & maintenance
I Manage an Estate or HOA
Commercial & large property care
Help With Fruit Trees
Citrus, avocado & orchard care
I Have a Tree Emergency
Storm damage & hazard removal
Featured Guides
Plant Health Care
The definitive guide to diagnosing, treating, and protecting Southern California's most valuable trees.
Local Tree Care
How tree care differs across the unique microclimates of Los Angeles, Ventura, and Santa Barbara Counties.
Tree Species Library
Detailed care instructions for Oaks, Sycamores, Palms, Olives, and more.
Tree Disease Library
Identify and treat common pathogens and pests affecting Southern California trees.
Seasonal Tree Care
Month-by-month maintenance schedules for optimal tree health.
Estate Tree Management
Specialized arboriculture for luxury estates, HOAs, and commercial properties.
Emergency Tree Care
Immediate response guides for storm damage, hazardous trees, and high wind events.
Tree Care Glossary
The definitive dictionary of arboriculture terminology for Southern California properties.
Recent Resources
Why Ventura County Avocado Trees Decline — and How to Stop It
Root rot, improper irrigation, and nutrient imbalance account for most avocado losses in our region.
The Best Time to Prune Citrus in Southern California
Most homeowners prune at the wrong time and lose a season of fruit. This guide covers the correct window for Ventura and LA County.
The 8 Best Shade Trees for Ventura and Los Angeles County
Not every shade tree is right for our microclimate. Our arborist-curated list of species that thrive from Camarillo to Pacific Palisades.
Drought Stress in Southern California Trees: Early Signs and What to Do
California's dry summers take a hidden toll on landscape trees long before visible decline appears.
How to Protect Heritage and Champion Trees on Your Property
Mature, large-canopy trees are irreplaceable assets — but they require specialized care.
Why Most Fruit Trees Fail in Southern California — and How to Plant Them Right
Hole depth, rootball handling, irrigation placement, and soil amendment all determine whether your new tree thrives.