Monty Don is planning ahead and planting autumn flowering crocus at Longmeadow. Also for autumn colour, he's adding cyclamen to the spring garden, and has tips on how to get a great show from them. Joe Swift visits Marks Hall, a surprising but inspiring modern garden created within the original walls of a Victorian kitchen garden. And Carol Klein is in Staffordshire with a couple who've created a garden for all seasons in their half-acre plot.