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Lithodora diffusa ‘Heavenly Blue’
Blue Lithospermum
Zone 5 to Zone 9
Plant Shapes: Carpet

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.

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Conditions     Appearance    
Sun Exposure
  Full Sun
  Partial Shade

Soil Type

Soil pH

Soil Moisture

Care Level

Foot Traffic

Rate of Spread
Flower Colour
  Deep Blue

Blooming Time
  Early Summer
  Late Spring
  Late Summer
  Mid Summer

Foliage Color
  Grey Green

Plant Characteristics
  Accent: Good Texture/Form
  Deer Resistant
  Ground Cover

Flower Head Size
  Very Small

   10-15 cm
   4-6 inches

   30-45 cm
   12-18 inches

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