Helleborus sternii Silver Dollar The Helleborus sternii Silver Dollar is the perfect choice for a late winter display and is great for woodland gardens, pots & containers. The blooms are a unique stunning icy green colour with a rosy tinge, set off by bright lemon yellow anthers. The silver-green foliage of this hardy evergreen perennial gives a frosted appearance and is a firm favourite with garden designers who are looking for something special to flower in late winter. Early-emerging bumblebees love the nectar-rich blooms. Height: 35cm (14). Spread: 35cm (14).