Lithospermum is a choice groundcover or rock garden plant, making an unforgettable display when grown well. This selection forms a low, creeping mat of hairy grey-green leaves, studded with royal-blue star flowers from late spring through summer. Plants MUST have a well-drained, acidic soil in order to thrive. Heavy clay soils are sure death. In colder regions this will benefit from a light covering of evergreen boughs as soon as the soil is frozen in late fall. Combines well with Heaths and Heathers, since plants have similar requirements. Evergreen where hardy. Prune lightly in late summer by trimming the new tip shoots back by about half, to encourage a dense habit. Plants are shrubby, so hard pruning is not recommended.