Emerald Ash Borer Alert: Now Confirmed In Denver!

EAB is kicking ash and your trees could be next
The Emerald Ash Borer (EAB) has officially been identified in the City and County of Denver, and it’s rapidly becoming one of the most destructive threats to our urban forest. If you have Ash trees on your property and haven’t treated them yet; it may already be too late depending on your location.
What Is the Emerald Ash Borer?
The Emerald Ash Borer is a shiny green beetle, originally from Asia, that targets Ash trees. Don’t be fooled by its size. This tiny insect has killed tens of millions of Ash trees across North America since its discovery in Boulder in 2013.
What makes EAB so dangerous is how it attacks:
- The larvae burrow under the bark, feeding on the tree’s vascular system.
- This prevents the tree from moving water and nutrients.
- Trees can die in as little as 2 to 4 years after infestation; often without any visible symptoms until it’s too late.
Once symptoms appear, like canopy thinning, bark splitting, or increased woodpecker activity, the damage is already extensive.

Why Act Now?
EAB spreads fast, often flying from half a mile to 12 miles a day. Early prevention is your best shot at saving your trees. If your Ash tree is still healthy, preventive treatment gives it the best chance of survival.
If you delay, the only options left may be costly tree removal and replacement.
What We Offer at Autumn Tree Lawn & Landscape
At Autumn Tree, we specialize in proactive, long-term protection against Emerald Ash Borer. Our solution?
✓ 3-Year Residual Trunk Injection: This targeted treatment goes straight into the tree’s system and continues protecting from the inside out for three years.
✓ No sprays or repeated visits: just strong, effective protection for one payment.
✓ We track every treatment: so you don’t have to worry about scheduling or reapplication timing.
This method is the gold standard in EAB prevention and is ideal for homeowners, HOAs, and commercial properties looking to protect their green assets.
We’ve helped thousands of property owners across the Denver metro area save their Ash trees—and we’d love to help you too.
What About Soil Injection?
Our EAB Soil Injection Booster: Extra Protection When It Matters Most
In areas where EAB infestation is severe or spreading quickly, we may recommend adding our EAB Soil Booster.
This is a systemic insecticide applied to the soil surrounding the tree. Absorbed through the roots, it provides additional protection especially during peak infestation seasons or for trees already under stress.
Why Add the Booster?
✓ Insurance: Extra protection in high-risk areas
✓ Targets: both larvae and adult beetles that may be present
✓ Enhances: overall defense system
An extra layer of defense can mean the difference between saving or losing your tree. Our arborists assess each tree’s size and last trunk injection to determine whether the booster is right for you.
Don’t Wait… EAB Isn’t
EAB destroys from the inside out, often without obvious warning signs. That’s why early detection and prevention are key. Whether you’re a homeowner, property manager, or HOA board member, now is the time to act.
With trunk injection as the foundation and soil booster for added strength, Autumn Tree provides the best defense against this invasive killer.
Call Us Today for a FREE Estimate!
Let us evaluate your trees, provide expert recommendations, and handle the scheduling, treatment, and tracking, so you don’t have to.