Utah State University Extension
Dyer's woad (Isatis tinctoria) was introduced into Utah during the mid-nineteenth century as a source of indigo dye. The plant escaped cultivation and has spread across rangelands, foothills, and other sites throughout the Intermountain West. This fact sheet provides information about identifying dyer's woad and its lifecycle, distribution, and management in pastures, rangelands, and non-crop settings. It includes information about using appropriate herbicides to control dyer's woad and how to apply them.
Zesiger, Cody; Hadfield, Jacob; and Ransom, Corey, "Identifying and Managing Dyer's Woad (Isatis tinctoria) in Pastures, Rangelands, and Non-Crop Settings" (2021). All Current Publications. Paper 2200.