LITHODORA diffusa (Lithospermum diffusum) ‘Grace Ward’. Southern Europe. One of my favorite perennials, and one well suited for California climates. It forms a dense mat with fuzzy, dark leaves suggestive of rosemary. For several weeks in spring, and sometimes again in fall, it stages a dazzling display of 1/2" electric blue blossoms. A fine plant for rock gardens and bank plantings. Sun, well drained (preferably sandy) soil, occasional watering when established. Hardy to about 0^oF.