High hedges might make good neighbours but what makes a good hedge? In this week’s programme, presenter David Maxwell, will be joined by experts Ann Fitzsimmons and Reg Maxwell to talk about the many benefits of a hedge, whether it’s for wildlife, sound proofing or even as a defence against flooding. Also on the programme, David speaks to Chris Cocks about clematis for every garden. Claire McNally describes some of her favourite lilies and Juliet Giles from Gardens Illustrated on the rise of online gardening courses – who are they for and can they replace getting your hands dirty? David and the team will also be tackling listeners’ questions which can be emailed to gardenerscorner@bbc.co.uk