About 25 locals gathered Friday morning to remember the late Barbara Nunn McCarthy, whose memory in Rockdale County they hope will last longer than the tree planted in her honor. The Rockdale Master Gardeners held a tree dedication Jan. 17 at the Memorial Arboretum, located at the Georgia International Horse Park. Besides being a Master Gardener, McCarthy was Rockdale County’s first female county commissioner, and a service agent with the Rockdale County Cooperative Extension Office.