Want to grow your own food in your own yard? Adam Saunders, Director of The Columbia Center for Urban Agriculture, will discuss urban gardening on Tuesday, Oct. 20, 7:30 p.m. at Hillel Center, 1107 University Avenue.   Everyone is invited to this free meeting.  Refreshments and socializing.   Presented by Osage Group, Sierra Club. More information at ColumbiaUrbanAg.org or call 573-356-9392.