How Did a Cactus Grow Out of a Chimney?

Peter Gibbs and the Gardeners Question Time panel visit the RHS Wisley Greening Skills Garden in Woking, an exciting new project designed to inspire and equip the next generation of horticulturists. No postbag edition is complete without your questions, so the panel dip into the GQT inbox to answer your gardening conundrums.

Joining Peter are head gardeners and garden designers Pippa Greenwood, Matthew Pottage and Matthew Biggs.

Senior Producer: Dan Cocker Junior Producer: Rahnee Prescod

A Somethin' Else production for BBC Radio 4