Organic farming advocate Matt Collogan and Progressive Gardens Inc. President Evan Folds will speak about organic backyard gardening during the North Carolina Coastal Federation’s March Coastal Speaker Series. The event will be held from 7-8:30 p.m Wednesday, March 11 at the federation’s Fred & Alice Stanback Coastal Education Center. The program is free but donations will be accepted. For more information or to register, visit www.nccoast.org.