
Welcome to Warner’s Tree Surgery, Mesa’s Top Tree Care Service. With over half a century of experience, I specialize in diagnosing and treating a wide range of tree diseases.
Welcome to Our Company
In this video, my wife Pat’s avatar invites you to learn about our company, the services we provide, and our commitment to keeping trees healthy.
Citrus Tree Problems in Arizona
Citrus trees in Arizona are struggling due to several insect infestations. I can control most of the harmful ones, but a few pests will eventually kill citrus trees over time.
Watch the video and download the help sheet below to get started on saving your citrus trees.
Learn More
If you want to understand these issues better and protect your trees from diseases, watch the video.
Handouts For Citrus Trees
Queen Palm Tree Diseases
This video explains how to prevent and treat common Queen Palm problems in Arizona, including frizzle top and fusarium wilt.
Important Nutrient Warning
Queen Palms rely almost entirely on manganese — and a small amount of boron — for their immune system. Arizona soil contains no natural manganese, and regular palm spikes do not provide enough. This is why many Queen Palms decline even when people think they are fertilizing correctly.
Watch the video and download the worksheet to learn the correct treatment plan and keep your Queen Palms healthy.
Handouts For Queen Palms
Click here to order Lutz Manganese Queen Palm spikes
Click here to order the Ultra Tree Spikes For The Boron
Understanding Yellow Palo Verde Issues
Yellowing in Palo Verdes is commonly caused by root rot or the Palo Verde Root Borer. Signs include holes at the base of the tree, sawdust-like frass, and thinning canopy.
What to Do
Watch the video, download the help sheet below, and have me come out to get you started on protecting your Palo Verdes.
Handouts For Palo Verde Trees
Ash Tree Diseases
Ash trees are beautiful and resilient, but they can suffer from several diseases that affect their health and appearance.
In this video, I show you how to recognize the signs of common ash tree problems, including ash anthracnose, ash yellows, verticillium wilt, and emerald ash borer.
How to Protect Your Ash Trees
I also share effective, natural methods to prevent and treat these diseases. As a tree doctor with years of experience working on ash trees in Arizona, I know exactly what to look for and how to help.
If you love your ash trees and want to keep them healthy and strong, this video is for you.
Handouts For Ash Trees
NASA Discovers Microbes in the Sky
In this video, I explain NASA’s recent discovery of microbes living high in the atmosphere. These airborne pathogens can travel around the world, influence how raindrops form, and may introduce new diseases to trees and other plants.
How Rain Makes Trees Sick
These microbes can be carried down by rain, spreading germs from the upper atmosphere into our soil and onto our trees. Watch the video to learn how this process works and what it may mean for tree health in the future.
How Herbs and Trees Fight Disease
In this video, Pat from Warner’s Tree Surgery explains how herbs and trees use enzymes to fight disease, and how those enzymes are created from nutrients in the soil.
Improving Plant and Soil Health
Pat also shares tips on using herbs for your own health and on improving soil quality so your trees and plants can produce the enzymes they need to stay strong.
Pine Tree Diseases
Pine trees provide shade, wind protection, and beauty, but they can suffer from several diseases that affect their health and appearance.
In this video, you’ll learn how to recognize symptoms of common pine problems such as tip blight, root rot, and aphid infestations, and how to manage them effectively.
Keeping Your Pines Healthy
You’ll also get tips on preventing these diseases by giving your pine trees the proper care they need.
Whether you’re a homeowner, landscaper, or tree enthusiast, this video will help you keep your pine trees healthy and beautiful in Mesa, Gilbert, Sun Lakes, Tempe, Chandler, and Scottsdale.
Handouts For Pine Trees
Tipu Tree Losing Leaves
If your Tipu tree has dying branches, white or dead leaves, thinning canopy, yellow sap on the bark, curled or spotted leaves, or unusually small leaves, it is showing signs of serious disease.
In Maricopa County, these symptoms are commonly caused by anthracnose, apple scab, canker rot, and emerald ash borer.
What to Do
Watch the video, download the help sheet below, and have me come out to get you started on saving your Tipu trees.
Tipu Tree Losing Leaves
If your Tipu tree has dying branches, white or dead leaves, thinning canopy, yellow sap on the bark, curled or spotted leaves, or unusually small leaves, it is showing signs of serious disease.
In Maricopa County, these symptoms are commonly caused by anthracnose, apple scab, canker rot, and emerald ash borer.
What to Do
Watch the video, download the help sheet below, and have me come out to get you started on saving your Tipu trees.
Handouts For Tipu Trees
Chemical Burns in Trees
Chemical burns occur when excess ions around the roots reverse the root membrane, forcing water out of the tree. This leads to leaf burn, wilting, and decline.
Common Causes
- Toxic substances in the soil
- Tool or paint-cleaner runoff
- Drain cleaners (Drano)
- Gas leaks
- Insecticide spills
- Pool salt or chlorine
- Excess fertilizer
- Contaminated fill dirt
Treatment
Flood the tree heavily for two weeks to push the chemical deeper into the soil. New buds often appear within 1–2 weeks. Severe cases may require direct trunk injections to bypass damaged roots and boost the tree’s immune system.
After watering for two weeks, leave the tree alone for a year. If leaf problems return, have the tree re‑evaluated.