Two amateur gardeners are paid their final visit by the experts. Ann-Marie helps to put the final touches to the Harrow garden of Lisa Jacobson. Over the weeks, the pair have been turning the tiny patch into an area for Lisa's two small daughters to enjoy - even transforming an old shed into a playhouse. Carol Klein makes her last trip to Felixstowe to see compulsive plant purchaser Diana Harold. But her patio is piling up with unplanted buys, so Carol and Diana tour the garden putting each plant in the right spot. Monty Don returns to the Guernsey garden of Liz and Rod Collonette to tackle the renovation of the garden's Victorian greenhouse. The pair whitewash the glass to shade the plants and prune the prized grapevine to ensure a bountiful crop of grapes.