The mature trees on your Barrington property are worth protecting. From the towering oaks along country roads to the elms and maples shading established neighborhoods like Barrington Hills and South Barrington, these trees add genuine value to your landscape, your home, and your quality of life. But keeping them healthy takes more than seasonal pruning. It takes expert diagnosis, targeted treatment, and consistent care from an arborist who knows what Illinois trees face year after year.
Hendricksen Tree Care provides professional tree treatments and maintenance services throughout Barrington, IL and the surrounding Lake and McHenry County communities. Our ISA-certified arborists bring decades of hands-on experience treating Illinois trees including diagnosing disease, managing pests, building long-term care plans, and helping homeowners avoid the costly mistakes that come from ignoring early warning signs.
Why Barrington Trees Need Expert Care
Barrington is one of the most densely wooded communities in the Chicago suburbs. Large residential lots, mature tree canopies, and proximity to forest preserves mean property owners are stewarding trees that in many cases are 50, 80, or even 100+ years old. That’s a privilege and a responsibility.
The threats are real. Emerald Ash Borer has devastated ash tree populations across the region. Oak wilt continues to spread through connected root systems in wooded areas. Severe storms leave structural damage that isn’t always obvious until a limb fails. Compacted soil, drought stress, and construction impact quietly weaken even healthy-looking trees over time.
Hendricksen Tree Care understands these local conditions. We’ve treated trees across Cook, Lake, McHenry, and DuPage counties, and we tailor every treatment plan to health and condition of your trees.
Our Tree Treatment & Maintenance Services in Barrington
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Tree Health Assessments Not sure if your tree is in decline or just stressed? Our ISA-certified arborists conduct thorough on-site evaluations, examining root zones, bark, branch structure, foliage, and soil conditions, to give you a clear picture of what’s going on and what it will take to address it. We speak plainly: no jargon, no upselling, just honest advice about what your trees need. |
Emerald Ash Borer (EAB) Treatment Emerald Ash Borer has killed hundreds of millions of ash trees across North America, and Barrington is not immune. If you still have ash trees on your property, treatment is time-sensitive. Once EAB infestation reaches a critical threshold, the tree cannot be saved. Hendricksen Tree Care offers: – Trunk injection treatments using proven systemic insecticides – Soil drench applications for appropriate site conditions – Annual or bi-annual maintenance programs to keep protected trees healthy – Honest evaluation of whether treatment is still a viable option for your tree |
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Oak Wilt Prevention & Treatment Oak wilt is a devastating fungal disease that travels through root grafts and sap-feeding beetles. In Barrington’s wooded neighborhoods, a single infected tree can spread disease to neighboring oaks within the same season. Our arborists can identify early symptoms, recommend fungicide injections for at-risk trees, implement root barrier trenching to interrupt underground spread, and advise on proper pruning windows (never prune oaks April through July in Illinois). |
Preventive Tree Trimming & Structural Pruning Proper pruning is one of the most effective long-term investments you can make in your trees. Done correctly, it improves structure, reduces storm damage risk, promotes healthy growth, and extends the life of your canopy. When done incorrectly, it permanently damages a tree’s ability to defend itself. Our crew follows ANSI A300 pruning standards on every job, ensuring your trees are trimmed for health and longevity, not just aesthetics. |
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Deep Root Fertilization Suburban soils are often compacted and nutrient-depleted, especially in established neighborhoods where lawn care and construction activity have disrupted natural soil biology over decades. Deep root fertilization delivers a slow-release blend of macro and micronutrients directly into the root zone using pressurized injection, bypassing the dense surface layer and putting nutrients where trees can use them. This is especially effective for mature oaks, maples, and elms showing signs of stress or slow decline. |
Insect & Disease Management Beyond EAB and oak wilt, Illinois trees face a wide range of threats that can go undetected until significant damage has occurred. |
Hendricksen Tree Care treats and monitors for:
- Thousand Cankers Disease (walnut trees)
- Dutch elm disease
- Anthracnose fungal infections
- Scale insects and aphid infestations
- Bacterial leaf scorch
- Root rot and soil-borne fungal pathogens
Storm Damage Assessment & Preventive Risk Management
After a major storm, the visible damage is only part of the story. Cracks, splits, and hidden decay often develop in the aftermath, creating hazards that won’t become obvious until the next wind event. We provide post-storm evaluations that document existing damage, identify hidden structural concerns, and recommend targeted interventions, whether that’s cable bracing, crown reduction, selective removals, or a scheduled monitoring program.
Why Barrington Homeowners Trust Hendricksen Tree Care
| ISA-Certified Arborists Every job is supervised by a certified arborist with credentials you can verify. |
Locally Rooted We know the soils, the storms, the pests, and the trees across the Chicago suburbs. Local expertise makes a real difference. |
| Fully Licensed & Insured Comprehensive liability insurance and workers’ comp protect your property and your family throughout every job. |
Clean, Respectful Work We treat your lawn and landscaping like it’s our own ,debris removed, equipment tracked in and out without damage. |
| Long-Term Relationships We build multi-year care plans and maintain ongoing relationships with our clients, not one-and-done transactions. |
Transparent Communication We explain what we find and what we recommend in plain language, no jargon, no pressure, no surprise charges. |
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Schedule Your Free Consultation Your trees are an investment. Protect them with a team that knows what they’re doing. Call Hendricksen Tree Care today or request a free on-site assessment at rwhendricksenco.com. We serve Barrington, Barrington Hills, South Barrington, and the surrounding Lake and McHenry County area. |
Frequently Asked Questions — Tree Treatments & Maintenance in Barrington, IL
How do I know if my tree is diseased or just stressed?
It’s often difficult to tell the difference without a professional assessment. Some signs of concern to watch for include thinning canopy or sparse leaf coverage; discolored, spotted, or prematurely dropping leaves; bark that is cracked, sunken, or oozing; branches dying back from the tips; mushrooms or fungal growth at the base of the tree; or unusual insect activity. Many of these symptoms can have multiple causes, some treatable, some not. An ISA-certified arborist from Hendricksen Tree Care can conduct an on-site evaluation and give you a clear, honest diagnosis.
Do I still need to treat my ash trees for Emerald Ash Borer if they look healthy?
Yes and the timing matters. EAB treatments work best when beginning before infestation reaches advanced stages. By the time an ash tree shows visible signs of EAB decline (thinning canopy, D-shaped exit holes, serpentine galleries under bark), it may already be too late for treatment to save it. If you have ash trees in the Barrington area that have not yet been treated, we strongly recommend a consultation as soon as possible. Treatment is far less expensive than removal.
What is the best time of year for tree trimming in Illinois?
For most deciduous trees, late winter through early spring while trees are still dormant is ideal. This timing minimizes stress, promotes vigorous new growth, and reduces exposure to pests and disease. That said, timing varies by species. Oaks in Illinois should never be pruned between April and July due to oak wilt transmission risk. Fruit trees have their own optimal windows. Dead, damaged, or hazardous branches should be addressed any time of year, regardless of season. Hendricksen Tree Care will advise you on the best timing for your specific trees.
How much does tree treatment cost in Barrington, IL?
Cost depends on the type of treatment, number of trees, tree size, and access conditions on your property. EAB trunk injection treatments for a single ash tree may range from a few hundred dollars, while comprehensive multi-tree treatment and maintenance programs for larger properties will vary accordingly. The most important thing to understand is the cost of inaction: a tree that could be saved with a $300 treatment may cost $2,000 or more to remove if it dies. We provide transparent, itemized quotes after a free on-site consultation, no pressure, no hidden fees.
Is Hendricksen Tree Care licensed and insured in Illinois?
Yes. Hendricksen Tree Care is fully licensed and insured in Illinois, carrying comprehensive general liability insurance and workers’ compensation coverage. Our team includes ISA-certified arborists whose credentials can be verified through the International Society of Arboriculture. We are happy to provide proof of insurance upon request before any work begins.
Can you treat a tree for oak wilt, or does it need to be removed?
It depends on the species and the stage of infection. Red oaks typically decline and die within weeks of showing symptoms, leaving little window for treatment. White oaks are more resistant and can sometimes be saved with systemic fungicide injections if caught early. In both cases, the most important step is preventing spread to neighboring oaks through root grafts. Hendricksen Tree Care can assess the situation, recommend root barrier installation if appropriate, and advise on removal of infected material to prevent further loss.
Does Hendricksen Tree Care offer ongoing maintenance programs?
Yes. Many of our Barrington clients prefer scheduled annual or bi-annual care plans that include regular health assessments, preventive treatments, fertilization, and pruning. This approach is more cost-effective than reactive care and helps us catch problems early before they become expensive. We build multi-year relationships with our clients and track the condition of your trees over time. If you’re looking for a trusted arborist for the long term, not just a one-time service call, Hendricksen Tree Care is a good fit.
Reviews:
Review by Steven Curl
”They took down a pine in my front yard. They did a great job at fair price. Highly recommend, would hire again.”
Review by Scott Hansen
”Great tree trimming company very professional. Upfront with your costs. Considerate of your property.”
