Brunnera are rhizomatous herbaceous perennials with large, ovate or heart-shaped basal leaves and sprays of small bright blue flowers in spring. 'Jack Frost' is a perennial grown for its large, heart-shaped silver leaves edged and veined with green, and sprays of small blue flowers in spring. Ultimate height 0.1-0.5 metres, Ultimate spread 0.5-1 metres.
