In this episode, Monty helps two pairs of amateur gardeners who want to create dream gardens in very different urban spaces. In Bromley, Mei an and Gerard have ambitious plans to turn their narrow, split level garden into a Japanese paradise. Their attention to detail means they'll stop at nothing to create the perfect eastern retreat, complete with a mountain stream, mossy boulders and traditional Japanese plants. But with tonnes of soil to move and the budget running out have they bitten off more than they can chew? Meanwhile in Stoke, artists Anna and Andrew want to transform their tiny concrete yard into a haven of tranquillity with something beautiful to look at in every corner. They're going to have to use all their creative flair to turn this blank canvass into something amazing, but with ambitions for a green roof, living, wall and elaborate vertical gardening are they in danger of overcrowding this very small space?