This guide provides photos of often misidentified annual weeds found in Weld County, Colorado. 

This Field Guide is intended as a pocket field guide for the identification of many common native woody plants that are found in riparian areas in the Intermountain West and Pacific Northwestern regions of the United States. This guide is intended to provide a few simple identification characteristics of these woody plants in both the summer and winter. 

This publication from Weld County provides photos of native annual plant species commonly misidentified. 

This presentation provides information on voluntary programs offered by the US Fish & Wildlife Service that can assist private landowners in habitat improvement and protection.