25 July 2018: presentation to The Journal Club, a group of Austin physicians. Private.
24 JUNE 2017: ASHE JUNIPER Hill Country Master Gardeners, Kerrville Hill Country Youth Center, 1:00 pm
7 JUNE 2017: GRAVEL
Austin Organic Gardeners, Zilker Botanical Gardens, 7:00 pm
24 JUNE 2015: ASHE JUNIPER Capital Area Master Naturalists, Austin Nature Center, 7:00 pm
3 SEPTEMBER 2015: FLOOD WATERS & EROSION Georgetown Garden Club, Georgetown Parks and Recreation Community Center, 1:00pm