Dyers Woad (Isatis tinctoria) was first introduced to the United States and cultivated as a source of blue dye. Since its introduction, it has spread to portions of Utah and inhabits dry, disturbed environments.

This project has focused on determining the spread of the systemic rust Puccinia thlaspeos, which actually inhibits the growth of I. tinctoria. Data collected from 1997 to 1999 was modeled in a GIS using the Inverse Distance Weighting algorithm. The final report is now available as a pdf downloadable file.