Green power: how gardening changes lives behind bars, top 10 plant diseases and a new order at Wisley (Ep 151)

This week we meet the staff and inmates at HMP Hull and discover how a prison garden has helped transform lives behind bars. Last year the prison's horticultural achievements won them the coveted Windlesham Trophy, an RHS award for the best prison garden. Meanwhile back at RHS Garden Wisley we meet pathologist Matthew Cromey who shares advice on the top 10 plant diseases reported to our gardening advice service last year. And finally, entomologist Andy Salisbury introduces a new kind of insect that marks the first new 'order' to be found in the UK in over a century.