WE OFFER THE BEST MONEY BACK GUARANTEE OF ANY COMPANY

100% Money Back Guarantee On Every Tree We Treat

on the treatment price if the tree should die during the guarantee period.

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Tree Doctor 911

Tree Health and Tree Service in Santa Fe, NM

Expert Tree Diagnostics, Disease Treatment & Trimming in Santa Fe Since 1938

An arborist in a harness and helmet uses a tool to inspect a large tree trunk containing a cluster of fungi.

Tree Health & Diagnostics

Since 1938, we’ve been helping Santa Fe residents keep their trees healthy and happy.

Close-up of a gloved hand using an orange gas-powered hedge trimmer to prune a green bush.

Tree Pruning & Trimming

Our local arborists offer expert tree trimming services to improve looks, safety and health.

Large, dark, amber-colored sap oozing from the bark of a tree trunk surrounded by green foliage.

FAQs

We invite  you to read our frequently asked questions about tree care or tree problems.

Doctor examining a sick tree with a bandaged face and a sad expression; leaves are falling.

Tree Doctor 911

We specialize in Saving, Revitalizing & Rejuvenating Sick Trees since 1938.

Since 1938, family owned Tree Doctor 911 has been providing expert arborist services in Santa Fe, NM and the surrounding areas, specializing in tree health, diagnosis, and revitalization.

Tree Doctor service van parked outdoors, with large logo and phone number on the side.

New Mexico Arborists

Tree Health Services

Tree Diagnostics

Tree Disease Management

Tree Pest Removal

Complete Tree Health, Diagnostics & Arborist Services

Microinjects Injections

Limb Trimming

Seasonal Tree Pruning

Tree Removal Services

Tree Maintenance

Tall leafy tree canopy against a blue sky with scattered clouds
Wide green tree canopy in a lush forest with dense foliage and a small person beneath it

Advanced Tree Health Treatments to Restore & Protect Your Trees


We work with pine and cottonwood and all types of trees, addressing common warning signs like brown leaves in summer, brown tree, yellowing leaves, scale, tree fungi, early leaf drop, wilting leaves, sparse canopy growth, and spots on leaves and infestations of bark beetle, tussocks moths and other pests. Our comprehensive tree health services also target structural concerns such as leaning trees, dead branches, hanging limbs, brittle twigs, and trunk-related issues like peeling bark, cracked trunks, deep fissures, bleeding sap, white foam on bark, holes in the trunk and all tree disease.

The team at Tree Doctor 911 takes immense pride in serving residential and commercial property owners in Santa Fe, Albuquerque and the neighboring New Mexico times. With us, the customer experience is rooted in education, transparency, and a genuine commitment to preserving the natural environment. We work worldwide on special projects to save historic trees and we only microinject trees NO SPRAYING EVER! We are environmentally friendly and Bee Friendly.  We continue our pioneering traditions while also investing in modern training and technology to ensure the best outcomes for our patients—your trees! We always take time to thoroughly evaluate trees, explain our findings, and recommend the most effective treatment options to restore their health. We care so deeply about what we do, a portion of every service is reinvested into global efforts to protect and restore old-growth trees and support replanting initiatives through biological corridors around the world. Whether you need seasonal trimming, need tree disease treatment or if a tree is unable to be salvaged and tree removal is necessary, Tree Doctor 911 is here to help. Give our team a call at 505-461-0163  to learn how we can help you save dying trees, provide professional tree trimming or to learn more about our extensive health-related tree services in Santa Fe and beyond.

People in blue shirts holding hands in a forest around a huge tree trunk

This is a famous Saba tree, the last large tree left that the city was known for in Canas, Costa Rica. A group of scout children joined TreeDoctor911 to fight for its life.

Person in a blue shirt and green pants standing by a large tree in a grassy wooded area.

Steve Thomas, Owner of Tree Doctor 911

Trusted Tree Doctor: Pioneer in Eco-Friendly Tree Healing


Tree Doctor 911 was established in Clovis, New Mexico in 1938. What started as an ambitious vision by one man has now flourished into a worldwide tree care service that saves and completely restores the health of thousands upon thousands of sick trees every year.

 

"We are pioneers of Micro IV Technology who specialize in this advanced form of life-saving tree rejuvenation. We never spray any harmful chemicals into the environment, as this kills many beneficial insects and wildlife — including bees — which are nature's pollinators and are essential for our planetary ecosystem survival.

 

We have the best warranty out of anyone in the tree care industry and are the only tree service in the USA to be so confident of our success level that we offer insurance on the life of most trees we treat. We are eco-friendly tree healers who have a full array of staff on hand including professionally trained and certified tree diagnosticians and PhD Biologists.

 

Our research and lab facility has many exceptionally skilled individuals with outstanding credentials to ensure you are getting the best treatment possible for your trees".

Customer Reviews  |  Your business is very appreciated.

G and stars

We have been using Tree Doctor911 for over 10 years. I can say that during that time they have treated many of our trees and we have never lost a single tree since that time. They have been excellent to deal with and always very responsive.


- Harold D.

Blog  |   We invite you to monitor our News Blog for informative articles.

Wildfire burning through a forest, with orange flames and thick gray smoke rising among trees
By Tree Doctor 911 April 17, 2026
The flaming tree in the photo above is a perfect example of how a dead or unhealthy tree can quickly turn into a major fire hazard. A healthy tree that has been cared for by eradicating the parasites that kill parts of the tree, should be totally alive with no dead wood in it--and is not an ideal fuel for any fire to burn--but is actually a fire retardant. Healthy trees will help to stop a forward-moving fire. The wood from a healthy tree is full of water so much so, that a piece of firewood cut from a live tree will sometimes weigh three times as much as that same piece of wood once it is dried. The healthy tree is literally filled with and holds water like a sponge. It will not readily burn, but will put out great amounts of smoke (unburned particles) when put into an environment where fire has made the surrounding temperature sometimes hundreds of degrees hotter. Before the wood can burn, first the heat of the existing fires must dry the wood out. The wet wood will omit great amounts of smoke, which works to take the oxygen out of the healthy fire. Oxygen is necessary for a fire to burn and the smoke works to destroy oxygen, which is an accelerant that the fire depends on for energy to reach maximum efficiency and move rapidly. Oxygen to a fire is almost as powerful as vaporized petroleum is to a fire. Without oxygen there is no fire! ​A piece of green healthy wood about firewood size (~18 inches,) will have about 8 to 10 pounds of water in it (water weighs approximately 8 pounds per gallon.) If you have a large campfire that was burning brightly and dumped one gallon of water on it, what would be the effect on the fire? It would greatly diminish or maybe even extinguish the before blazing fire. The wet wood in a healthy tree works the same way, as a barrier to slow the fire, not accelerate it. If you build a campfire as large as a Volkswagen with dry wood then to feed the fire you put twenty 18 inch pieces of green firewood on it, what will happen? The green wood will not be fuel for the fire, but will help extinguish it. Smoke will be the first by-product of the green wet wood produced. The green wood will immediately shoot the humidity sky high in the fire dropping the temperature of the fire, and producing thick smoke which will remove much of the oxygen from the fire, which the fire needs to thrive. The trees on the planet in the preceding millennia would have been burnt out completely without natural barriers for fires. Of course geography creates barriers, but walls of healthy trees can and have completely stopped fires as well. Countless past forest fires that have raged out of control were in thriving forests that contained partially dead groves of trees, which greatly accelerated the propagation and speed of such fires. USDA says 'over 90 percent of the trees that die from parasites are from bark beetle' At Tree Doctor 911, we are the only company in America that offers a 5 month life warranty on your trees we treat and save. We have been in business since 1938--and have never every sprayed trees since the business began--because that chemical is poison to our pollinators and our beneficial insects, and can be deadly to animals, people and many beneficial parts of the environment. We microinject all of our medicine we use systemically into the tree in order to minimize harm to anything that does not attack the tree directly.
Two people working under a tree in a grassy yard, one bending over a bucket and one sitting nearby.
By The Tree Healer April 17, 2026
There are times it seems when only Steve Thomas and his Tree Doctor 911 crew can save a sick or dying tree. Around the world, from diagnosing ailing trees from the back of an elephant in Thailand to administering first aid to a severely wounded Russian olive tree in Eldorado, Thomas said he “almost never loses” a tree. ​ Thomas, the son of a Clovis nursery owner and tree healer, works out of offices in Albuquerque and his major-projects center in Bijagua, in Costa Rica’s Guanacaste province. ​ However, he has been spending more time of late in Santa Fe, where he says “they have a great heart to save trees. … People here are more tree-friendly than they are in other parts of the state.” Thomas plans to open a Santa Fe office sooner than later, and push the City Council toward supporting tree-preservation measures. ​ Also in New Mexico, Tree Doctor 911 tends to to a large stand of cottonwoods on a ranch about 15 miles north of Grants — trees that were planted in 1803 — as well as six 300-year-old apple trees in the same area. ​ He also has diagnosed and treated trees in, among other places, New Zealand, the South American Amazon and the Solomon Islands. ​ He and his Costa Rican project director, Liliana Sandoval, here temporarily to help with his growing Santa Fe business, recalled how they rescued a beloved but ailing tree in a Costa Rican village, saving it, for a short time at least, from deforesters who had already claimed about 7,000 trees. ​ “The people felt like the tree was a member of the family,” Sandoval said. “I saw tears.” Thomas said his company takes what might be a considered a triage approach to saving trees and never sprays chemicals into the environment to treat a tree. ​ “We are in the tree-saving business,” Thomas said. “We are completely different from the other guys. We will take a tree down. But we try to talk people out of doing that, and we only do it as a last resort.” Thomas cited his efforts to maintain and find new remedies drawn from nature. ​ “We are bee-friendly, we are environmentally-friendly.” Rather than spraying a tree with chemicals, Thomas will inject it with the appropriate pesticides or fungicides, or various minerals and nutrients to boost a tree’s immune system — including plant stem cells — “plants to heal plants.” ​ “We are always looking in our travels for answers that have been in use by indigenous populations,” he said. He cited indigenous people in the Amazon who use a resin-based substance from a tree to patch their canoes. It also turned out to be a way to seal tree wounds, especially when a branch is removed, Thomas said. It can be used instead of chemical-based paint, which can harm the tree. ​ “Where most tree companies look for a big guy that can handle a chain saw well,” Thomas said, “what we are doing is hiring biologists to research ways to save trees.” He is building a research center in Costa Rica to find innovative ways to protect and save what he calls “the sentinels of our planet.” ​ Sandoval remembered walks among the trees with her grandfather in Costa Rica. “We go with him, and we are hugging and kissing the trees. My grandfather talked to the trees all the time.” Thomas said he urges his clients to “feel the energy of the tree.” ​ In some ways, the Costa Rican research center is an extension of his father’s efforts in Clovis to find innovative ways to save trees. “I used to watch him inject quinine into trees. And being a kid, I just figured everybody did that. But not so.” David Stoudt of Eldorado is one of the tree owners who Thomas managed to talk out of chopping down an ailing tree. “The tree looked like it was dead,” Stoudt said of his 20-year-old Russian olive tree. ​ He said a local tree trimmer had apparently failed to clean his equipment from a previous job and infected the beloved 30-foot-tall tree with a fungus. ​ A few months after Thomas’ crew treated the tree, “It had leaves all over the place. … It gives all kinds of shades to the house,” Stoudt said. ​ Thomas said another Santa Fe client recently told him, “I didn’t even know you could heal a tree. I didn’t know you could fix them when they are broken.”
Large spreading tree with a thick trunk and broad green canopy in a grassy park
By Tree Doctor 911 April 16, 2026
In a dry climate like Santa Fe, water stress is one of the most common threats to tree health. At Tree Doctor 911, we help homeowners identify early signs of drought stress in trees before permanent damage occurs. Trees rely on consistent moisture to support growth, nutrient uptake, and overall vitality, and when that balance is disrupted, they begin to show clear warning signs that shouldn’t be ignored. Here are the signs to look out for. Yellowing or Browning Leaves One of the earliest indicators of drought stress is discoloration in the leaves. You may notice yellowing leaves during the growing season or brown, scorched edges that appear long before fall. This happens when the tree cannot take up enough water to support healthy leaf function. Wilting Leaves and Early Leaf Drop Leaves that appear limp, curled, or wilted are often a direct response to a lack of water. In more advanced cases, trees may begin dropping leaves early in an effort to conserve moisture. While this can be a survival mechanism, it also signals that the tree is under significant stress. Sparse Canopy and Reduced Growth A thinning canopy or lack of new growth is another common symptom of drought stress. Trees that aren’t receiving adequate water will slow down their growth and may struggle to produce a full, healthy canopy. Over time, this can weaken the tree and make it more vulnerable to pests and disease. Cracked Soil and Exposed Roots Dry, compacted soil around the base of a tree is a strong indicator that moisture levels are too low. You may also notice roots becoming exposed as the soil pulls away, further reducing the tree’s ability to absorb water and nutrients effectively. If you’re noticing any of these signs, Tree Doctor 911 in Santa Fe is here to help. Our team specializes in diagnosing and treating drought stress with targeted solutions designed to restore tree health. Call our local tree health experts in Santa Fe at  505-461-0163  o schedule an evaluation and protect your trees from long-term damage .