Peter Gibbs and the panel are in Calne, Wiltshire. Chris Beardshaw, Matthew Wilson, and Anne Swithinbank are answering the horticultural questions.This week, the panellists discuss tree peonies, making workable soil in a new build and caring for a Clematis. They also debate the importance - or not - of tidiness in the garden.Away from the questions, James Wong goes to the Citrus Centre to meet Amanda and Chris Dennis.Producer: Dan CockerAssistant Producer: Jemima RathboneA Somethin' Else production for BBC Radio 4