Cris Force, Master Gardener since 2008, will speak on "Building Healthy Soil” at 9:30 am.  Cris and Linda Hlozansky won the top prize in June from the International Master Gardener Association's annual competition for their experiment in increasing sweet potato yield by improving the soil in which they grew.  Cris will apply this knowledge to the forest at Wright Center.  For an informative video on the experiment, click on this link: https://www.cobbcounty.org/communications/news/cobb-master-gardeners-receive-international-master-gardener-award-w-video.  Park at Chestnut Ridge Church, 2663 Johnson Ferry Road, Marietta 30062. Easy access to parking from entrance on Post Oak Tritt Road.