At Longmeadow, Monty refreshes a container of overgrown herbs, plants alpines in a pot and revisits the shrub and perennial cuttings he took a few weeks ago.Arit Anderson travels to Kent to meet a designer who is placing sustainability and the environment at the heart of the gardens she designs, and the team discover a garden in Dorset that has been laid out specifically with scent in mind.There is a look back to 2019 as Frances Tophill visits an allotment on the Isle of Man, meeting a grower who uses plants to make cosmetics, and on the Isle of Wight, there is a second chance to meet an enthusiast who has filled his garden with daylilies.