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<p>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.</p><p>Joining Kathy on the panel are garden designers, botanists and alotmenteers James Wong, Matthew Biggs and Frances Tophill. </p><p>Later, Matthew Pottage provides a list of thriving trees that are sweeping the streets of London.</p><p>Producer: Matthew Smith
Junior Producer: Rahnee Prescod</p><p>A Somethin' Else production for BBC Radio 4</p>