As autumn gathers momentum, there is still plenty to do in the garden. Monty Don cuts back his wildflower meadow and, with an eye on some early season colour, makes a start on planting up his spring containers. Joe Swift learns the importance of allotment beekeeping when he visits an award-winning plot in Bristol. And Carol Klein travels to Dorset to meet Neil Lucas, one of the country's leading experts on ornamental grasses.