Monty catches up with seasonal jobs at Longmeadow this week when he divides some perennials and plants alpines for spring colour. He also travels to Dublin to meet Helen Dillon to find out why she is planning to leave her world-famous garden after decades of honing it to perfection. In Scotland, Joe Swift begins his quest to find out why we should rekindle our love for rock gardens, while Frances Tophill perches precariously on a cliff in Cornwall as she joins a couple who have created a garden in extreme conditions. Adam Frost continues his progress on designing his garden in Lincolnshire and Flo Headlam transforms a shady and neglected front garden in London. And garden designer Mark Lane shares his passion for colour in his garden in Kent.