On the Aug. 31 “Gardening in Georgia,” host Walter Reeves discovers that growing citrus plants in Georgia isn’t as hard as it seems.”Gardening in Georgia” airs twice on Saturdays, at noon and 7 p.m., on Georgia Public Television. It’s co-produced by the University of Georgia College of Agricultural and Environmental Sciences and GPTV.On the Aug. 31 show, University of Georgia horticulturist Mark Reiger shows Reeves several cold-hardy citrus that can be grown on a deck or patio and moved into the house on the coldest winter nights.Stepping stonesReeves shows viewers how to make stepping stones for your yard or garden, too. He uses nails to support strips of cardboard that can be bent into any form to contain poured concrete. On this show, he makes stones in the shape of a foot and a dogwood flower petal.Finally, Reeves looks at mushrooms, the flowering part of an underground fungus. He shows a line of mushrooms that sprouted where a tree root died and is being decomposed by fungi.There is no way to eliminate the underground fungus, he says. So there’s no way to keep mushrooms from popping up. The various ways of dealing with mushrooms when they appear, though, aren’t really so bad. Some can even be fun.