Join David Stevens, garden curator, for a stroll through Longenecker Horticultural Gardens highlighting sensational seasonal colors and exploring the science behind this natural phenomenon. Tours take place except in unsafe weather. Free, no registration required. Meet at the Visitor Center. University of WI Arboretum 1207 Seminole Hwy. Madison, WI 53711 608/263-7888 or arboretum.wisc.edu