Emerald Ash Borer Treatment & Prevention in Denver, Castle Rock, Highlands Ranch, and Greenwood Village
Save your ash tree's before its too late. Local arborist. Free evaluations available - Servicing Castle Rock, Denver and Surounding areas
Is Your Ash Tree at Risk?
Thinning canopy and excessive dieback
D-shaped exit holes in the bark
Bark splitting and serpentine larval galleries underneath
Increased woodpecker activity
Emerald Ash Borer Treatment Options
At Fleming’s Tree Care, we offer science-based Emerald Ash Borer treatments that protect your trees long-term. Our services include:
Trunk Injection Treatments
- The most effective method for EAB control, lasting up to 2–3 years per application.
Soil Injection Treatments
- Ideal for smaller trees or as a supplemental measure.
Preventative EAB Treatment
- The best defense is to treat your healthy Ash trees before they show signs of infestation.
All treatments comply with environmentally responsible practices and are applied by trained professionals.
Serving Denver, Castle Rock, Highlands Ranch, Greenwood Village & Surrounding Areas
- Denver, CO
- Castle Rock, CO
- Greenwood Village, CO
- Highlands Ranch, CO
- Parker, CO
- Lone Tree, CO
- And surrounding South Denver Metro areas
Why Choose Fleming’s Tree Care?
As a local, family-owned tree care company based in Castle Rock, we know how important your landscape is to your home’s value and your community’s health. Our certified arborists are experienced in diagnosing, treating, and preserving Ash trees throughout:
- Local experts who care about Colorado’s trees
- Honest advice—no gimmicks, no scare tactics
- Environmentally conscious treatment methods
- Full-service tree care: pruning, planting, plant health care, and more
Don’t Wait Until It’s Too Late!
Emerald Ash Borer infestation spreads quickly. Protect your Ash trees now. Treatment is far more affordable than removal and replacement.
Schedule a Free Ash Tree Evaluation Today!
Frequently Asked Questions About Emerald Ash Borer in Colorado
Yes, as of 2025, Emerald Ash Borer has been confirmed in Denver, with rapid spread into suburbs like Highlands Ranch, Greenwood Village, Castle Rock, and nearby communities.
Our trunk injection treatments typically last 2 to 3 years, depending on tree health and environmental conditions.
If your Ash tree is healthy or only mildly infested, treatment is highly effective and more cost-efficient than removal. Severely declining trees may need removal for safety.
The optimal treatment window is late spring through early summer, but treatments can be effective outside this window depending on the situation.
Fleming’s Tree Care – Your Local Tree Experts for EAB Treatment in Denver and Beyond
Protect your investment, preserve your landscape, and join the fight against Emerald Ash Borer with Fleming’s Tree Care. We proudly serve Denver, Castle Rock, Greenwood Village, Highlands Ranch, Parker, and Lone Tree.