Herbicide Applications
Herbicide applications for county natural lands or rights-of-way.
| Start | End | Location | Open to the public | Product | Notes |
|---|---|---|---|---|---|
| 2026/01/0501/05/2026 | 2026/01/2301/23/2026 | Colp Property | No | Milestone, Transline | Spot spraying diffuse knapweed patches to preserve native species diversity |
Mowing Reports
Mowing activities are recorded for Boulder County maintained roads.
| Start | End | Location | Notes |
|---|
Drone Applications
You can sign up to receive email or text notifications about scheduled drone herbicide applications on non-agricultural open space areas. Notifications will be sent out on the Friday before the week of application. Drones may be used in areas where the terrain is too steep for worker safety, tractors cannot operate safely, or the area is too large for other methods to be practical. They are also ideal for smaller, remote applications in places that are otherwise inaccessible. To ensure safety, drones are operated at least 50 feet away from property boundaries and a minimum of 660 feet (1/8 of a mile) from residential areas and municipal boundaries.
| Start | End | Location | Open to the public | Product | Notes | Map |
|---|