It's time to enjoy the best of late summer at Beechgrove as Carole Baxter assesses how the dahlias have delivered this year. They are great for cut flower collections, but has the weather affected the results? There is more garden colour from Kirsty Wilson as she looks ahead to the autumn and plants some late-flowering perennials. Kirsty also checks in on her attempt to grow melons in the polytunnel and takes a look at the pumpkins in the hugel bed, a method of growing based on planting on a mound of decomposing timber and other organic material. It has been reported that there has been a drop in the number of butterflies and other pollinators in gardens across the UK this year, and Carole finds out if that really is the case and, if so, why it has happened and what gardeners can do to help.