With Christmas just around the corner, David heads to a Christmas tree farm on the outskirts of Belfast where Tony Johnston is planning for the Christmas rush in 10 year’s time, as he plants trees for Christmas future. At the Chelsea Physic Garden, new head of plant collections Emily Hazell offers a look at the newly restored Pelargonium House. Oliver Schurmann chooses a grass as his final perennial of the month and gardener Claire Woods and wildlife expert Katie Bell join David in studio. Contact the programme on gardenerscorner@bbc.co.uk