With Buster by his side, Adam Frost gets on with some winter jobs. He's got hellebores to plant, a sedum roof to repair and a nestbox that is in need of a spring clean. He also celebrates the joy of growing your own horseradish and sows broad beans for an early harvest. In Wiltshire, Carol Klein opens the gates to a secret garden that has never been seen by the public, while Jamie Butterworth discovers how a gardener turned an empty field into a glorious display of perennials in just three years and Rekha Mistry spends the day at an allotment site in Sheffield with community at its heartias.