This table includes Natural Resources Spray Areas (Staff) for period of March 30 – April 3, 2026.
| Natural Resources Area | Target Species | Chemical Trade Name |
|---|---|---|
| Lake McIntosh Nature Area | Kochia, Canada thistle, hoary cress | Antares Pro, Milestone, Telar XP |
| St Vrain corridor from Sandstone Ranch to Peschel Open Space | Russian olive, tamarisk, Siberian elm | Aquaneat |
| Left Hand Creek from Hwy 287 to St. Vrain Creek | Russian olive, tamarisk, Siberian elm | Aquaneat |
| Sandstone Ranch Nature Area | Canada thistle, hoary cress | Milestone, Telar XP |
| Left Hand Creek corridor - Hover Rd to St. Vrain Creek | Canada thistle, hoary cress | Milestone, Telar XP |
| St. Vrain Creek Corridor - Airport Rd to Boulder Creek | Canada thistle, hoary cress | Milestone, Telar XP |
