Expert Tips for Keeping Your Garden Thriving Through Pennsylvania’s Dry SeptemberAsia Tabb Bio Recent Stories Asia Tabb is the Host and Producer for WITF’s The Spark. They’re 65-gallon rain barrels, and one half inch of rain actually will fill them up.”Container gardens, however, need special attention. “If you’ve done a good job, your containers are all full of roots that are fighting with each other for water,” Erica Jo said. On plant sales popping up at garden centers this time of year, she offered some buyer beware advice. “First of all, look at it—are the leaf tips brown, does it look extremely yellow?” she said.