Powerscourt, propagating perennials and Diarmuid Gavin’s garden fit for a King

David Maxwell heads to Powerscourt Gardens in County Wicklow where 3000 roses are being planted in the Italian garden. Head gardener, Alex Slazenger introduces David to some of the winter highlights in a garden for all seasons. In Hazelbank Park on the north shore of Belfast Lough, Diarmuid Gavin is starting work on a garden to mark the coronation. Mary Doris has tips of creating garden for all the senses and award winning author Eoghan Daltun on the need to let nature in. Brendan Little joins David live in studio to take questions and to give tips for the week. gardenerscorner@bbc.co.uk