In this episode, Monty begins to sow annual climbers and gets started on tidying his borders. Joe Swift learns how and when to prune them, and why. Nick Bailey, head gardener of the Chelsea Physic: Garden, discovers a hidden tropical oasis.

For the first time this season, Monty gets to work in his wildlife garden to ensure that there are plenty of plants in flower for early pollinators. Carol Klein meets Stuart Donachie, who has embraced every planting opportunity in his shady garden in Herefordshire, and Frances Tophill invites viewers to grow easy summer vegetables along with her as she trials varieties for taste and productivity at RHS Rosemoor.