I cast this trough about 6 years ago. In its former life it had dianthus and other things that I've forgotten. Gradually it got overgrown by a chamaecyparis pisifera 'Boulevard', so this spring I relocated the trough and replanted it. I've read that hypertufa can have as short a life span as a decade, but this trough seemed totally healthy and solid.
That's ilex crenata 'Dwarf Pagoda' (back R), vitaliana primuliflora (front R), gypsophilia cerastioides 'Pixie Splash' (front L), arabis blepharophylla from Home Depot (back L) and armeria juniperifolia 'Alba' (center).