A look at the role that plants and gardening play in people's mental and physical wellbeing, exploring the idea that gardening is a good and positive pastime. Arit Anderson travels to a medical centre in Kent where gardening is prescribed by doctors, to help patients cope with long-term mental and physical problems. Adam Frost is at a community garden in Oxfordshire, created to provide ongoing support for sufferers of Parkinson's disease. Back at Longmeadow, Rachel de Thame joins Monty Don as they plant bulbs for spring and catch up on some seasonal tasks.