Gardeners’ World presenter Adam Frost on his new garden and autumn trees at Brook Hall

With the leaves falling presenter David Maxwell heads to the 25 acre arboretum at Brook Hall near Derry. David Gilliland shows him some of the large collection of trees that are dazzling before their leaves drop including one which smells like toffee! Also on the programme, Gardeners’ World presenter Adam Frost on his life, career and his new garden in Lincolnshire. Oliver Schurmann reveals his penultimate perennial of the month and David is joined in studio by Brendan Little who will take questions from listeners and offer some seasonal advice. Contact the programme on gardenerscorner@bbc.co.uk