The last days of summer are when gardeners start planning for spring colour and it is a perfect time to choose and plant bulbs. At Longmeadow, Monty Don gives his recommendations. Carol Klein responds to another viewer's dilemma at Glebe Cottage in Devon and shows how best to propagate favourite plants during a house move. From taking cuttings to saving seed, she demonstrates which plants can quickly make a new garden feel like home. Joe Swift visits Hestercombe Gardens in Somerset, once the home of the Somerset Fire and Rescue Service, to see one of the best restorations of the Edwin Lutyens and Gertrude Jekyll partnerships in the country. He takes a close look at how design and colour can evoke mood in a garden