As any keen gardener knows, it's not just the leaves that pile up in the garden at this time of year, so do the autumn and winter jobs. With that in mind, Beechgrove is back with a special series to help guide you through everything you need to tackle as the days grow shorter and the temperatures drop.In this episode, Carole and Calum are at Beechgrove with information on what to do with dahlias now that the flowering is finished. They also list the top five plants to have in your garden to help wildlife through winter months and reveal how to top up your plant collection for free.Meanwhile, George is taking hardwood cuttings at his garden in Joppa and there is a visit to a fabulous garden planted to look its best in winter, showing that a growing area isn't just for summer interest, it can look great all year round.