Raised, turf covered slate stepping stones lead through a sunken bed of Impatiens 'Cupido Pink' and Cupressus sempervirens towards a seating area surrounded by sharp and spiky planting of Cordyline australis, Agave americana, Yucca gloriosa, Yucca recuvifolia, Yucca floribunda, Chamaerops humilis cerifera and Astelia chathamica 'Silver Spear' in the Quilted Velvet Garden, designed by Tony Smith at the RHS Chelsea Flower Show. © Rob Whitworth