There are many ways you can get involved with the Indian Peaks Group and the Sierra Club. The easiest way is to come to one of our events. If you want to do more, attend a committee meeting and maybe become a member. And speak up!

Herbicides on Boulder County public lands

Update: On February 3, 2026, Marta Loachamin and Ashley Stolzmann decided to continue the moratorium on spraying herbicides on Red Hill. This is a victory that resulted from more than a thousand Boulder County residents contacting our county commissioners, asking them to stop the spraying. Scores of residents have shown up at meetings as well--as happened at the county commissioner town hall on January 22, where over 20 people stood and asked the commissioners to stop the spray. Thank you Boulder County! 

The fight isn't over. We need to continue to tell the county commissioners that we do not want poisons on our public lands. But we can celebrate this small victory.

Background: January 21, 2026, the Boulder County commissioners voted to continue herbicide spraying on 3,000 acres of Boulder County public lands. Marta Loachamin and Claire Levy voted yes to the herbicide spraying; Ashley Stolzmann voted no. 

Boulder County staff are still planning to expand the spraying of indaziflam—an herbicide that prevents seeds from sprouting—on 3,000 acres of our county public lands. Because of public outcry, there has been a brief halt to these plans. But this week, this halt will likely be reversed and the county will start spraying our public lands with indaziflam again. Once applied, these chemicals will remain toxic in the soil for between 3-9 years, preventing all seeds in the seedbank from sprouting.

What indaziflam does: As a pre-emergent herbicide, indaziflam prevents seeds from sprouting, whether they are annual or perennial seeds, non-native or native, “weed” or cultivated plant. In short, the soil becomes non-productive and can stay that way for 2-7 years.

Indaziflam can also have toxic effects on humans, other mammals, pollinators, and aquatic creatures of all forms. No matter how carefully applied, it can leach into groundwater, streams, and ponds; drift is also a problem.

Contact information for the County Commissioners:

Marta Loachamin: mloachamin@bouldercounty.gov

Ashley Stolzmann: astolzmann@bouldercounty.gov

Claire Levy: clevy@bouldercounty.gov

Educate yourself on this issue—go here for more information:  https://www.pesticidesbouldercounty.org/indaziflam.

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Political Committee

Who We Are:

The mission of the Sierra Club political program is to preserve the environment through nonpartisan grassroots political action. These are principal goals of the program:

•     To elect candidates who will support and promote environmental protection
•     To raise public awareness about environmental issues and elevate the priority of these issues for decision-makers
•     To encourage Club members and other environmentalists to participate in the political process
•     To advance the Club's conservation agenda by building relationships with legislators and other elected officials
•     To strengthen the Sierra Club's capacity to elect pro-environment candidates at every level of government