Oak wilt treatment cost in Texas
What oak wilt treatment typically costs in the Hill Country and Central Texas, what drives the price, and what can offset part of it.
These are typical published ranges, not quotes. They come from the Oakwilt.org Texas cost guide, written by a tree care company about the Dallas–Fort Worth area. Hill Country prices may differ. Only an arborist who sees your trees can price the job.
Most Texas homeowners spend roughly $250 to $1,500 per tree. The biggest factor is trunk diameter (DBH), because that sets how much fungicide the tree needs.
Typical oak wilt treatment cost by tree size
| Tree size (DBH) | Typical range per tree |
|---|---|
| Small, 6–12″ | $250–$450 |
| Medium, 12–20″ | $450–$800 |
| Large, 20–30″ | $800–$1,200 |
| Heritage, 30″+ | $1,200–$1,500+ |
What drives oak wilt treatment cost
- Number of trees. Oak wilt spreads through roots, so arborists often recommend treating nearby healthy oaks too. Multi-tree jobs cost more overall but may get per-tree discounts.
- Preventive vs. therapeutic. The same guide says treating an infected tree usually takes more product and may need repeating, while preventive treatment uses less.
- Trenching or removal. Root barriers or removing infected red oaks are separate costs.
Oak wilt treatments to be wary of
The guide warns against "root drench" products and untrained injection with hand-pump kits. Ask any arborist what method and fungicide they use and whether they're Oak Wilt Qualified.
Programs that offset part of the cost
Inside Boerne city limits, the City may reimburse $5 per inch of trunk diameter for qualifying injection (about $100 on a 20-inch tree), up to $1,500 per property per year, subject to funding. It offsets part of a typical bill, not the whole job. See Boerne rebate details. Across Central Texas, including Kerrville and Fredericksburg, Texas A&M Forest Service runs a cost-share that can cover up to 50% of approved trenching or red oak removal costs (not injection), approved before work starts. See financial help in our oak wilt FAQ.