As the winter draws to a close, work in the garden starts to step up gear. With the flowers and fruits of summer in mind, Monty Don gets going by planting pots of summer bulbs for colour and scent, passing on his secrets of success by using a variety of different planting techniques. He also reveals his plans for reinvigorating the area in his garden where perennials planted for their rich jewel-like colours need some attention. He shows that, by dividing and replanting some of the larger clumps now, he will get not only more plants but a better display later in the summer. Carol Klein visits Glendurgan Garden in Cornwall. Despite a slow start to the year, their magnificent magnolias are starting to bloom and she also joins in with the replanting of a border and gets their advice on the care and planting of tree ferns.