This Giving Tuesday, help support our mission to protect Our Big Sky from the threats of invasive species. 


Help us protect the places you love!

inspire ~ educate ~ conserve




It may be a

noxious weed...

just like oxeye daisy 

pictured here!

The Gallatin Invasive

Species Alliance 

is a 501c3 not-for-profit organization working to protect natural resources

from the threats

of invasive species.

Noxious Weeds... 

Replace native plant communities

Increase soil erosion

Degrade water quality

Damage fish & wildlife habitat

Decrease the value of land

Reduce recreation &

hunting opportunities

Increase trail maintenance costs

Report: The Gardens at Crail Ranch

October 01, 2019

We've been busy building a native demonstration garden at the Historic Crail Ranch! Click on link below to see what we've done and what's to come. 

Report: Clean.Drain.Dry. in the Gallatin

October 01, 2019

Aquatic invasive species are a real threat to the waters of Montana. Learn what we've been doing in partnership with Gallatin River Task Force to protect the Gallatin River. 

Report: Conserve Our Canyon

October 01, 2019

The Upper Gallatin Watershed encompasses some of the most ecologically and economically important resources in our county, which provide vital habitat and water for fish, plants, wildlife, and the people who live and
recreate in the area. Learn about our efforts to conserve heavily used recreation sites, public lands, and wildlife habitat in the canyon.

Give the BEST wildflower book around for $35 & support the Alliance!

December 02, 2018

What could be a better holiday gift than knowledge of the local flora of Big Sky?  Working to preserve species diversity is a priority for the Alliance, and you may have heard our director say how much she loves "Flora of the Yellowstone" you can purchase directly from us! Proceeds go to support the Gallatin Invasive Species Alliance and Gallatin Valley Land Trust! We don't have a direct purchase link at this time, but email us and we'll get a book to you. 

GISA Board Meeting

November 01, 2019

The next GISA board meeting is scheduled for Friday, November 1, from 3-5 pm in the large conference room at the Gallatin County Weed District (903 N Black - at the Fairgrounds). As always the public is welcome to attend.

Please reload

Noxious Weeds Have Widespread Impacts


Wildlife - Water - Fish - Native Plants - Landowners & Community - Recreation & Hunting - Ecosystem

© Copyright 2020 by

Gallatin Invasive Species Alliance

Tel: 406.209.0905