As well as catching up with various tasks at Longmeadow, Monty Don meets world-renowned garden designer, Piet Oudolf, at his latest creation in Somerset. He gets to grips with Oudolf's iconic naturalistic planting and explains how we can adapt this style to our very own gardens. Meanwhile, Carol Klein goes tree climbing in Bristol to find out how important these precious havens are for urban wildlife. Monty plants crab apples in the Cottage Garden and deals with the broken apple braches in the Orchard plus collects up some windfalls.