| Scientific Name: | Lithodora diffusa |
| Common Name: | blue lithospermum |
| Family Name: | Boraginaceae |
| Origin: | Europe |
| Hardiness Zone: | Zone 5: (-29 to -23 °C) |
| Plant Type: | Broadleaf evergreen, Ground cover |
| Mature Size: | 0.2 - 0.4m x 1.5 - 2.0m (height x width) |
| Habit: | Spreading, Twiggy |
| Form: | Creeping / Mat-like, Weeping |
| Texture: | Fine |
| Landscape Uses: | Alpine, Container planting, Erosion control, Ground cover, Group or mass planting, Mixed shrub border, Perennial border, Rock garden, Small garden/space, Spring interest |
| Exposure: | Full sun, Part sun/part shade |
| Soil or Media: | Acidic, Well-drained |
| Leaves: | Simple, Alternate, Leathery, Pinnate venation, Pubescent, Elliptic, Oblong, Entire |
| Flowers: | Cyme, Blue, Apr-May-Jun-Jul-Aug |
| Fruit: | Schizocarp, Brown, Jul-Aug |
| Key ID Features: | |
| Low, spreading groundcover; leaves alternate, sessile, pubescent, narrowly elliptic-oblong with rounded tips, most 20-25mm long x 3-6mm wide; flowers small with 5 deep blue, petals, most showy in April-May (plus sporadic blooms over summer). | |