California’s droughts are no joke. With water restrictions, extreme heat, and soil that doesn’t retain moisture well, keeping your plants healthy can feel like an...
July 9, 2025
State Applicators License #44974
Orange County Plant Healthcare – Your Local Tree & Plant Health Specialists
Affordable plant disease diagnosis, deep root watering, and soil health treatments — trusted by Orange County property owners for long-term tree and landscape care.
Get in Touch
Fill out the form below and one of our certified professionals will contact you within 1 business day.
Tree & Plant Care Experts in Orange County
Our licensed arborists deliver expert care and tailored solutions for healthier trees and landscapes across North & South OC.
Comprehensive Plant Health Solutions
From soil pH adjustment in Orange County to plant pest control OC, we cut salt build-up, balance nutrients, and prevent diseases before they escalate.
Tailored Programs
Each plant gets a customized preventive plant healthcare program OC based on species, soil, and landscape environment.
Tree & Plant Healthcare Experts Rooted in OC
At Orange County Plant Healthcare, we are proud to be the go-to experts for tree and plant wellness in Orange County. Led by ISA-Certified Arborist Fred De Maria, our team brings over 65 years of collective experience in diagnosing and treating plant health issues across residential gardens, HOA-managed properties, vineyards, golf courses, and commercial landscapes.
We serve communities across Irvine, Laguna Beach, Tustin, Fullerton, and Newport Beach with targeted, science-backed solutions. One of our most critical services is Plant Disease Diagnosis in Orange County, where we use expert field assessments, lab-based soil testing, and pest and fungal identification to detect and treat root causes before irreversible damage occurs. Our Insect & Disease Diagnostic Services cover everything from leaf discoloration and root rot to canopy decline and pest infestations.
For trees and shrubs suffering from drought stress or poor irrigation coverage, our Deep Root Watering in Orange County uses high-pressure injection to hydrate the root zone 12–18 inches below the surface — flushing salts, improving oxygen flow, and promoting long-term root vitality. This service is often combined with Bio-Stimulant Applications and Organic Soil Conditioners to enhance microbial activity and improve nutrient availability.
We also offer Weed Abatement Services in Orange County, designed to eliminate invasive weeds that rob your soil of moisture and nutrients. Our eco-conscious methods prevent regrowth and help protect the integrity of your landscape beds, turf areas, and open spaces.
For palm owners, our specialized South American Palm Weevil Prevention and Treatment program is essential. This invasive pest has devastated thousands of palms across Southern California, and early detection is critical. Our treatment plan includes systemic protection and health recovery strategies for at-risk species like Canary Island Date Palms and Queen Palms.
Every service we provide is part of a holistic, eco-friendly approach to landscape health, custom-tailored to your property’s needs and Orange County’s unique growing conditions.
Request a free plant health care quote Orange County today
Let’s diagnose and protect your trees and plants!
Our Specialized Tree & Plant Healthcare Services
We provide science-driven, eco-conscious treatments that protect and rejuvenate landscapes across Orange County. From palm trees to citrus groves, our certified arborists tailor every solution to your property’s unique needs.
Why Homeowners, HOAs & Landscapers Choose Us
Certified Expertise
Led by Fred De Maria, ISA-Certified Arborist with 35+ years of tree health experience in Orange County.
Targeted, Science-Backed Solutions
From soil pH correction to pest control, we use lab-based data to craft custom treatment plans.
Eco-Friendly Practices
Integrated Pest Management (IPM) and organic soil amendments protect both plants and the environment.
Local OC Knowledge
We understand the regional challenges across Irvine, Newport Beach, Huntington Beach, and surrounding areas.
Preventive Approach
We don’t just treat symptoms. We get to the root cause — and stop it before it spreads.
Transparent Communication
You get clear reports, ongoing updates, and no upsells.
Defense Venture Working Hours
Monday
08:00 AM - 05:00 PM
Tuesday
08:00 AM - 05:00 PM
Wednesday
08:00 AM - 05:00 PM
Thursday
08:00 AM - 05:00 PM
Friday
08:00 AM - 05:00 PM
Saturday
By Appointment Only
Sunday
By Appointment Only
Our Work Speaks for Itself
Client Testimonials
See Our Work in Action
Explore our gallery of before-and-after transformations, soil treatments, palm care services, and satisfied clients.
Latest From Our Blog
- All Post
- Deep Root Watering
- Plant Health Care
In the lush neighborhoods of Orange County, trees are more than just greenery — they’re part of our landscape’s identity. But even the healthiest-looking trees...
July 9, 2025
Expert insights from Fred De Maria, ISA-Certified Arborist – 35+ years helping Orange County landscapes thrive A Real Threat to Your Beautiful Palms If you...
July 9, 2025
Frequently Asked Questions
Signs like yellowing, drooping, spotting, or cracked bark may point to disease. We offer detailed diagnosis and lab-based treatment plans.
Yes — especially with our dry winters and compacted soils. It delivers water and nutrients where surface irrigation can’t reach.
Absolutely! We create year-round care plans based on your landscape’s needs.
Yes. We prioritize eco-friendly, bee-safe, and pet-conscious treatments in all programs.
Need a Plant Health Consultant in Orange County?
We’re here to help — whether you're dealing with plant disease issues OC, considering deep root watering in Irvine CA, or expanding your lawn's soil health.
or
Proudly rooted in Orange County, CA