One of the district’s oldest annual summer shows and plant sales returned on Saturday. When you’re a gardener, you never know what challenges you will face. Last year, it was the heat. This year, the rain. But that didn’t stop supporters of Cold Ash Gardening Club from putting a varied display. “Congratulations to everyone who managed to protect their plants from the inclement weather and take part in the show,” said show secretary Kate Miller. “There were a good range of flowers, including some lovely dahlias and an eye-catching blue delphinium. “The wetter summer meant there were some good-s…