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This week, David visits the gardens at Glenarm Castle where Neil Porteous is making the best of late autumn sunshine to prepare for next year. From heeling in rhododendrons, to starting perennials from seed, there is a long list to get through before winter sets in. At Rowallane Gardens near Saintfield, Claire McNally picks some highlights including Mahonia and reveals her quest to find a ‘not so tart’ berry from the plant sometimes known as the Oregon Grape. Also on the programme, Mary Doris on her favourite plants for winter interest, Tony Kirkham’s ‘Tree of the Month’ for November and Claire Woods joins David live in studio to take questions and offer autumn inspiration. gardenerscorner@bbc.co.uk