This resource provides guidelines on treating woody invaives and secondary weeds with the recommended timing and type of herbicide.   Developed by Fremont County Weed Management for Fremont, Custer, & Surrounding Counties April 2015   Please see Fremont County Weed Control’s booklet, “Guideline for Weed Management Plans” for more details such as herbicide rates and specifics about weed control methods.
This field guide focuses on the most problematic weeds in northwestern North  America for which there are at least some biocontrol agents established. Multiple  photos and descriptions of each weed included in this guide emphasize key  identification traits and plant ecology. Comparison tables are included to further  aid in identification of related weed species, where applicable.

This guide by Drs. Scott Nissen, Andrew Norton, Anna Sher, and Dan Bean offers targeted guidance on how to develop management plans, implement various control strategies, and plan restoration for treated sites. 

This easy-to-use website site-specifically estimates spotted knapweed and leafy spurge impacts on grassland biomass production and wildlife and livestock forage.  The weed impact calculations help land managers identify appropriate weed management option for their situation.

Encyclopedic in scope, this book is the first to cover North American weeds at every stage of growth. The book is organized by plant family, and more than five hundred species are featured. Each receives a two-page spread with images and text identification keys. Species are arranged within family alphabetically by scientific name, and entries include vital information on seed viability and germination requirements.

CDMS Website

For a quarter of a century, CDMS has delivered the most comprehensive market access to critical agro-chemical information and decision support tools for the agricultural, turf & ornamental, and food industries.