At Longmeadow, Monty's focus is on summer when he plants up containers for colour in the Jewel Garden. He also turns his attention to overcrowded ornamental grasses which, now they are beginning to put on growth, need to be split and replanted. Continuing her search for finding the right plant for the right place, Carol takes a close look at why plants survive in the cracks and crevices of walls and gives her recommendations for garden plants that will thrive in similar conditions. Zephaniah Lindo takes a trip to Wales to meet a fellow primula enthusiast.