Iconic hourglass planters by Swiss designer Willy Guhl, known as the Diablo. A wide flared bowl narrows to a slender waist and widens again to a broad base, a pure geometric silhouette that has become one of the most recognizable mid-century garden designs. Crafted from lightweight fiber cement, each carries its own aged surface of chalky whites, greys and golden lichen. Striking alone or grouped in a courtyard, along a path or at an entry.