This week at Longmeadow, Monty begins a brand new project when he starts a new soft fruit garden. He also plants new potatoes and divides herbaceous plants in the jewel garden. Frances visits an extraordinary tropical garden in Barbados which was developed from a collapsed cave, and we meet Chris Baines, a legend of gardening for wildlife, in his own small town garden. And as part of the programme's 50th anniversary, Mark Lane offers his choice of the plant he thinks has had the most impact on British gardens over the last half century.