Corten steel water trough below a tiled pavilion with planting of Buxus sempervirens, Agapanthus, Equisetum hyemale, Verbena bonariensis, Betula, Deschampsia cespitosa, Rosa and ferns in the "Vestra Wealth's Gray's Garden" designed by Paul Martin at the RHS Hampton Court Flower Show 2011. © Rob Whitworth