The festival will begin the Friday after Thanksgiving with a native plant sale from 9 a.m. to 3 p.m. All plants offered for sale will be native to the Lower Colorado Desert, and volunteers will be available to answer questions about how to get the best results. Plants may be pre-ordered from a list at anzaborregobotany.org. Dr. Gordon Pratt, a lepidopterist at the University of California Riverside, will be the Botany Festival Speaker. Dr. Pratt, a resident of Anza, will discuss local butterflies and the local plants upon which these butterflies depend. Dr. Pratt will be speaking Saturday, November 25, 2017, at 1:30 p.m. in the Visitor Center of the Anza Borrego Desert State Park. Admission is free.