Overview: Monty Don undertakes more seasonal jobs at Longmeadow. Arit Anderson meets a garden designer in Somerset who has worked in harmony with nature to create a garden on a former brownfield site, and Rachel de Thame explores the London garden of hairstylist Sam McKnight. A grower from Suffolk shares her obsession with tomatoes, and there's a gardener who has created a Japanese-inspired garden at his home in Bristol. And more viewers share what they’ve been getting up to in their gardens.