Peter Gibbs hosts the horticultural Q&A with experts James Wong, Matthew Wilson and Christine Walkden who answer questions sent in by email and from the virtual audience. This week, the panel tackles questions on pruning trees, a suffering asparagus fern and a curious case of frog spawn in a tree. Away from the questions, historian Advolly Richmond is joined by GQT regular Matt Biggs to unravel the fascinating history of the nation's favourite beverage - tea. Producer - Jemima Rathbone Assistant Producer - Millie Chu A Somethin' Else production for BBC Radio 4