Vegetation and Biodiversity Management

The Marin County Open Space District posts advance notice of pesticide applications on County open space lands. In addition, the County of Marin posts pesticide notifications on this webpage, and via audio recording at (415) 473-2847.

• October 2023 Notice pdf
• Location: Gary Giacomini
• Triclopyr

• 10/9 to 10/12/23 Notice pdf
• Location: Old St. Hilary's
• Triclopyr

• 9/18 to 9/28/23 Notice pdf
• Location: Ring Mountain
• Triclopyr and Imazapyr

• 9/5 to 9/15/23 Notice pdf
• Location: Baltimore Canyon
• Triclopyr

• 8/14 to 8/17/23 Notice pdf
• Location: Ring Mountain
• Triclopyr and Imazapyr

• 8/7 to 8/10/23 Notice pdf
• Location: Ring Mountain
• Vastlan and Habitat

• 5/15 to 6/15/23 Notice pdf
• Location: Kent Woodlands
• Vastlan and Competitor

• 4/17/23 Notice pdf
• Location: King Mountain
• Garlon 4 Ultra

• 8/22 to 8/25/22 Notice pdf
• Location: Ring Mountain
• Vasilan and Habitat

• 8/8 to 8/17/22 Notice pdf
• Location: Ring Mountain
• Vasilan

• 10/20 to 10/21/21 Notice pdf
• Location: Baltimore Canyon
• Garlon 4 Ultra