Emerald Ash Borer Treatment Cost in Colorado
Treatment is priced by trunk diameter and repeats on a cycle. The real question is whether your ash is still worth treating.
Emerald ash borer is established in the Denver metro, and untreated ash in Arvada, Wheat Ridge and Lakewood are dying on a predictable schedule. The decision is rarely about the price of one injection — it is about the total cost of protecting a tree for the next decade versus removing it now.
We do not publish price ranges, because an honest number depends on the tree in front of us. Every estimate is free, given in writing after we walk the site, and fixed before the saws come out.
What determines the price
Trunk diameter
Injectable products are dosed by diameter at breast height, so a large ash simply needs more product than a young one.
Treatment method
Trunk injection is the most reliable option for established borer pressure. Soil drenches are cheaper but far less dependable for a tree you actually want to keep.
Treatment interval
Effective programs repeat on a cycle — commonly every one to two years depending on the product — so budget the cycle, not a single visit.
Canopy condition at the start
Treatment protects a healthy canopy. Once roughly a third or more of the crown is thinned or dead, the tree usually cannot recover and treatment money is wasted.
Number of ash on the property
Treating several trees in one visit costs less per tree, and there is no travel to repeat.
The removal alternative
A dead ash gets brittle fast and becomes a more dangerous, more expensive removal than a live one. Deciding early is the cheapest option available.
Replacement planting
If you remove, factor in stump grinding and a diverse replacement species so the same pest cannot take the whole yard again.
How to keep the number down
- Have every ash on the property assessed in one visit
- Decide before the canopy thins — early treatment protects the most value
- Remove hopeless ash while the wood is still sound rather than after it becomes brittle
- Treat and grind or remove on the same appointment when both are needed
- Replant with a mix of species rather than another monoculture
Cost questions we get
Is my ash worth treating?
If the canopy is largely full and there is no significant dieback in the upper crown, treatment is usually a good investment. Once roughly a third of the canopy is gone, removal is the honest recommendation.
How often does treatment repeat?
On a cycle, typically every one to two years depending on the product and pressure. We tell you the interval up front so you can plan the real cost, not just the first visit.
How do I know if I have emerald ash borer?
Look for thinning from the top down, D-shaped exit holes, S-shaped galleries under the bark, epicormic sprouts on the trunk, and heavy woodpecker activity. We confirm during a free assessment.
What should I plant instead?
Diversify. Species suited to Front Range soil and water — such as Kentucky coffeetree, hackberry, oak or catalpa — spread the risk instead of repeating the ash monoculture.
Get a real number
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