There are plans for propagating and planting at Longmeadow this week when Monty Don plants up a new bed of irises and takes pelargonium cuttings. Nick Bailey brightens up a dull and shady space at the side of a terraced house and gives advice on plants that will thrive, Carol Klein pays the first of two visits to West Yorkshire to meet a couple whose outstanding planting has resulted in a garden full of late summer interest and Joe Swift takes a close look at a sloping and shady town garden to find out how the owner has designed this difficult space. We also meet a gardener in Dorset who took on the challenge of an overgrown coastal garden to create an Italianate idyll and take an in-depth look at one of the most colourful of summer stalwarts - the pelargonium.