Peter Gibbs hosts a correspondence edition from The Barbican Centre in London. Matthew Pottage, Anne Swithinbank and Pippa Greenwood answer the questions from the GQT in box. The panellists discuss getting a Loquat to flower, solutions for an ailing Yucca, and keeping houseplants alive when you're not going to be home for two weeks. They also offer advice on a straggly-looking cactus, recommend carnivorous plants for an unheated greenhouse, and suggest uses for used potting compost. While answering the questions, the panellists are shown around the beautiful indoor gardens at The Barbican by Head Gardener Marta Lowcewicz. Produced by Dan Cocker Assistant Producer: Hester Cant A Somethin' Else production for BBC Radio 4