Wild gardening at Knepp Estate, harvesting seed in Hillsborough and early autumn grasses

The Knepp Estate in West Sussex is world famous for turning its back on intensive farming in favour of rewilding. Its latest project is to transform a former crochet lawn into an undulating sustainable garden packed with over 900 plant species. This week presenter David Maxwell tours the garden with Charlie Harpur and finds out how they manage this unique space which has already massively increased biodiversity. At Hillsborough Castle and Gardens, Claire Woods is harvesting seed and enjoying some early autumn apples and at Mount Venus, Oliver Shurmann shares some of his favourite plants of the moment. Garden expert Ann Fitzsimmons will join David live in studio to answer questions. Contact the programme on gardenerscorner@bbc.co.uk