Monty Don continues work on the water feature in his paradise garden and makes a start on the planting. He also has tips on how to protect tender plants over the winter as well as making use of fallen leaves. Adam Frost travels to Stockton-on-Tees, Co Durham, to meet an eight-year-old with a passion for gardening and invention, Nick Bailey gives advice on how to choose the right tree for small gardens, while Carol Klein is at Hidcote Manor in Gloucestershire explaining the science behind autumn colour and revelling in the plants that produce the best seasonal display. Last in the series.