Join David Maxwell for another spring edition of Gardeners’ Corner. This week, with St Patrick’s day just around the corner, David explores the art of rose pruning which traditionally should be done by this date. It’s also the day to put potatoes into the ground, but what conditions do they need and what are the best varieties for the back garden? With seed sowing well and truly under way, Barbara Pilcher is in her greenhouse sowing some of her first herbs of the season and Colin Agnew is knee deep in mud, excavating his back garden as he tries to recreate a Victorian fernery. Joining David for this week’s programme are experts Cherry Townsend and Maurice Parkinson. They will be answering listeners’ questions live. If you have a questions email gardenerscorner@bbc.co.uk