Serving Denver Metro AreaISA Certified Arborists & BCMA Led
    Tree Pros, Certified Arborists in Denver
    Plant Health Care in Denver

    Arborist-Led Plant Health Care

    Plant Health Care in Denver, CO

    When a tree starts looking unhealthy, the first question should be why.

    Tree Pros provides Plant Health Care throughout the Denver metro with evaluations and recommendations guided by ISA Certified Arborists and Board Certified Master Arborist leadership.

    We look at the tree, its symptoms, growing conditions, and likely causes before recommending treatment.

    The goal is not to sell a treatment. The goal is to understand what the tree needs.

    • Serving Denver Since 2003
    • 3 ISA Certified Arborists
    • Every Crew Leader ISA Certified
    • Board Certified Master Arborist Led

    Start With the Cause

    Plant Health Care Looks at the Whole Tree, Not Just the Symptom

    Plant Health Care is an approach to maintaining and improving tree and plant health by identifying problems, reducing stress, and recommending care based on the condition of the plant.

    • A thinning canopy does not automatically mean a tree needs fertilizer.
    • Yellow leaves do not automatically mean disease.
    • Dead branches do not always mean the tree should be removed.
    • Similar symptoms can have very different causes.

    Tree Pros evaluates the tree and relevant site conditions before recommending what should happen next.

    Depending on what we find, that may involve monitoring, watering recommendations, pruning, fertilization, insect management, disease treatment, or another approach.

    Sometimes the right recommendation is no treatment at all.

    Certified Arborist Services
    Mature tree with a full, healthy canopy on a Denver area property

    What Are You Seeing?

    Changes in a Tree Can Be Worth Investigating

    You do not need to diagnose the problem before calling us. Tell us what has changed.

    Thinning Canopy

    A canopy that looks noticeably thinner than it did in previous seasons may indicate stress, decline, insects, disease, root problems, or other growing-condition issues.

    Yellow or Discolored Leaves

    Leaf color changes can have several possible causes. The pattern, timing, species, and condition of the rest of the tree can help narrow down what is happening.

    Dead Branches or Dieback

    Branch dieback may result from environmental stress, insects, disease, root problems, previous damage, or other factors. The cause matters before deciding how to respond.

    Early Leaf Drop

    Leaves dropping earlier than expected can be associated with stress or health problems, but the cause should be evaluated rather than assumed.

    Insect Activity

    Holes, galleries, insects, unusual material on bark or leaves, and canopy decline may indicate an insect problem that deserves closer evaluation.

    Tree Insect Control

    Disease Symptoms

    Spots, discoloration, abnormal growth, dieback, cankers, and other changes may be associated with tree disease or other stresses.

    Tree Disease Treatment

    Slow or Weak Growth

    A tree that appears to be growing poorly may be responding to soil conditions, water availability, root problems, environmental stress, or other limitations.

    A Tree Just Does Not Look Right

    Sometimes there is no obvious single symptom. If a tree has changed and you are concerned, an arborist evaluation is a reasonable place to start.

    Certified Arborist Services

    Do Not Treat the Guess

    The Same Symptom Can Have Different Causes

    Tree health problems are not always obvious from one symptom.

    A thin canopy could be related to drought stress, root problems, insects, disease, soil conditions, previous damage, or several factors working together. Water is often a factor, so it can help to understand how much water a tree needs in Denver and winter tree watering in Colorado.

    Treating the wrong problem wastes time and may do nothing for the tree.

    Tree Pros starts by looking at the tree and the conditions around it.

    We consider the symptoms, species, overall condition, site, visible stress factors, and relevant history before recommending care.

    That diagnosis-first approach helps us decide whether treatment is appropriate and what type of care actually makes sense. When decline is the concern, review the signs a tree may be dead or dying.

    Care Based on What We Find

    What Plant Health Care May Include

    Plant Health Care is not one treatment. The appropriate recommendation depends on the tree, the problem, and the conditions affecting it.

    Tree Health Evaluation

    We evaluate visible symptoms, overall tree condition, site factors, and other clues to help determine what may be affecting the tree.

    Learn More

    Tree Disease Treatment

    When symptoms are associated with a disease problem, the next step may involve disease-specific management based on the tree and condition.

    Learn More

    Tree Insect Control

    When damaging insects are involved, management should be based on the pest, tree species, condition of the tree, and appropriate treatment timing.

    Learn More

    Tree Fertilization

    Fertilization may be useful when tree condition and growing conditions indicate that additional nutrients or soil-focused care are appropriate. It should not be treated as an automatic solution for every stressed tree.

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    Pruning

    Dead, damaged, or problematic branches may need selective pruning as part of a larger tree care plan.

    Learn More

    Monitoring and Follow-Up

    Not every tree problem requires immediate treatment. In some situations, monitoring changes over time may be the most reasonable next step.

    Front Range Growing Conditions

    Denver Can Be a Difficult Place for Trees to Grow

    Trees growing around Denver deal with conditions that are very different from those in many forest environments.

    Dry periods, compacted urban soils, limited rooting areas, irrigation patterns, construction impacts, temperature swings, heavy snow, wind, insects, disease, and previous damage can all influence tree health.

    Often, more than one stress is involved.

    Understanding those conditions is an important part of deciding what a tree needs.

    Drought and Water Stress

    Periods of limited moisture can stress trees, especially when root systems are restricted or the tree is already dealing with another problem. Water stress can also make it harder for some trees to respond to additional environmental pressures.

    Urban Soil Conditions

    Residential and urban soils can be compacted, disturbed, or limited by sidewalks, driveways, buildings, and other development. What is happening below ground can affect what eventually becomes visible in the canopy.

    Heavy Snow and Wind

    Storm damage can remove canopy, break branches, and add stress to a tree that was already struggling.

    Insects and Disease

    Emerald Ash Borer, IPS beetles, and other insects or diseases can become part of the health picture for Denver-area trees. The presence of an insect or disease does not automatically tell us the correct treatment. Species, condition, severity, timing, and realistic treatment options all matter.

    When Insects Are Involved

    Not Every Insect on a Tree Is a Reason to Treat It

    Trees support many insects, and seeing an insect does not automatically mean the tree has a damaging infestation.

    When insect activity is suspected, identification matters. We consider the insect involved, tree species, visible damage, tree condition, timing, and whether treatment is appropriate.

    Tree Pros has worked through insect outbreaks affecting Denver-area trees, including Emerald Ash Borer and IPS beetles.

    When insect management is warranted, the recommendation should target the actual problem rather than treating the tree simply because insects are present.

    Explore Tree Insect Control

    When Disease Is Suspected

    Symptoms Need Context Before They Become a Diagnosis

    Leaf spots, discoloration, dieback, abnormal growth, cankers, and canopy decline can sometimes indicate disease.

    They can also overlap with environmental stress, root problems, insects, or other conditions.

    That is why Tree Pros evaluates the tree before recommending disease treatment.

    When disease management is appropriate, the approach should consider the tree species, condition, disease involved, timing, and realistic expectations for treatment.

    Explore Tree Disease Treatment

    Nutrition Is One Part of Tree Health

    Fertilizer Is Not a Cure for Every Declining Tree

    Fertilization can be useful for some trees, but a struggling tree does not automatically have a nutrient problem.

    If the underlying issue is drought, root damage, disease, insects, poor structure, or another stress, fertilizer alone may not address the cause.

    Tree Pros considers the condition of the tree and its growing environment before recommending fertilization.

    Learn About Tree Fertilization

    The Recommendation Should Fit the Tree

    Tree Care Should Solve a Problem, Not Create a Treatment Schedule

    Tree Pros does not begin with the assumption that every tree needs recurring treatments. We begin with the condition of the tree.

    • What symptoms are present?
    • How long have they been there?
    • What species is the tree?
    • What are the growing conditions?
    • Are insects or disease involved?
    • Is the tree dealing with structural damage or environmental stress?
    • What treatment options are reasonable?

    Sometimes treatment is appropriate.

    Sometimes pruning or changes in tree care make more sense.

    Sometimes the tree should simply be monitored.

    And sometimes a severely compromised tree cannot reasonably be preserved.

    The recommendation should come from the problem, not from a preset package.

    What to Expect

    How Plant Health Care Works With Tree Pros

    01

    Tell Us What You Are Seeing

    Let us know what has changed, what symptoms you have noticed, and how long the problem has been present.

    02

    We Evaluate the Tree

    We look at visible symptoms, tree condition, species, site factors, and other relevant clues to understand what may be happening.

    03

    We Identify the Likely Problem

    The goal is to understand the cause or contributing stresses before deciding whether treatment is appropriate.

    04

    You Get a Clear Recommendation

    We explain what we find and whether treatment, pruning, fertilization, monitoring, or another approach makes sense.

    05

    Recommended Care Is Completed

    If you approve the proposed work, Tree Pros carries out the recommended care and explains any relevant next steps.

    Experience You Can Verify

    Plant Health Care Guided by Certified Arborists

    Tree health problems are rarely helped by guessing.

    Tree Pros founder Paul Goin began professional tree care in Golden, Colorado, in 1981.

    He became an ISA Certified Arborist in 1988 and founded Tree Pros in Denver in 2003.

    Paul earned the ISA Board Certified Master Arborist credential in 2015 and graduated from the American Society of Consulting Arborists Academy in 2018.

    He also holds ISA Tree Risk Assessment Qualification, ASCA Tree and Plant Appraisal Qualification, and a Colorado Department of Agriculture Qualified Supervisor credential.

    Today, Tree Pros has three ISA Certified Arborists on staff, and every crew leader is an ISA Certified Arborist.

    That experience helps us look beyond a symptom and consider the tree as a whole.

    • Professional tree care experience dating to 1981
    • Tree Pros founded in Denver in 2003
    • 3 ISA Certified Arborists
    • Every crew leader ISA Certified
    • Board Certified Master Arborist leadership
    • ISA TRAQ
    • ASCA Academy Graduate
    • ASCA TPAQ
    • Colorado Department of Agriculture Qualified Supervisor

    Customer Reviews

    What Customers Say About Tree Pros

    "Paul is knowledgeable and helpful - we had him come out to assess our trees health as well as help with an issue we were having with rust on one of our trees - highly recommend!"

    Deirdre Frank

    Google Review

    "I've got a tree with damage that is dying. I contacted Paul at Tree Pros and he gave me quite a lot of advice that I'm hoping will have an impact in saving the tree. I appreciated his detailed advice (it's great when a person can get this kind of info from an expert) and I have my fingers crossed!"

    Ryan Patterson

    Google Review

    "Tree Pros recently checked my trees and gave me excellent advice on those that were struggling a bit, and which ones that were doing just fine. The young man knew what he was talking about...I will use again in the future. Highly recommended!"

    Bart Carpenter

    Google Review

    "Great. Knowledgeable. Friendly. Looking forward to our project!"

    Tamara Brady

    Google Review

    "Paul and Greg and Tree Pros are excellent at tree trimming. They are certified arborists, which means they will trim your tree in a way to keep it healthy and looking nice. They just don’t hack off limbs without concern for health or looks. Highly recommend them for a healthy tree trimming!"

    Dan Pastula

    Google Review

    Related Tree Care

    Tree Health Problems Often Overlap

    Serving the Denver Metro

    Plant Health Care Across the Denver Metro

    Tree Pros provides arborist-led Plant Health Care throughout Denver and surrounding communities.

    Plant Health Care Questions

    Frequently Asked Questions About Plant Health Care in Denver

    Tree health evaluation in the Denver metro area

    Worried About a Tree?

    You Do Not Need to Diagnose It Before Calling Us

    Tell us what you are seeing. Tree Pros will evaluate the tree, explain what may be happening, and help you determine the appropriate next step.

    Serving Denver since 2003. ISA Certified Arborists. BCMA Led. Call 303-791-3740.

    Verified Google Review

    “Paul is knowledgeable and helpful - we had him come out to assess our trees health as well as help with an issue we were having with rust on one of our trees - highly recommend!”

    Deirdre Frank

    Google Review

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