St Mary's Walthamstow

Kathy Clugston and an esteemed panel of gardening experts are in St Mary's Church in Walthamstow to answer the questions of a green fingered audience. Joining Kathy on the panel are garden designers, botanists and alotmenteers James Wong, Matthew Biggs and Frances Tophill. Later, Matthew Pottage provides a list of thriving trees that are sweeping the streets of London. Producer: Matthew Smith…