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ShrubsAlpine RockerySynonym

Lithodora diffusa 'Heavenly Blue'

purple gromwell 'Heavenly Blue'

A prostrate evergreen shrub forming a wide mat up to 15cm in height, with small, hairy leaves and abundant, vivid deep blue flowers 12mm in width produced in late spring and summer

Other common names
gromwell 'Heavenly Blue'
Synonyms
Lithodora diffusa 'Heavenly Blue'
Lithospermum diffusum 'Heavenly Blue'
see moreLithospermum 'Heavenly Blue'
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Size
Ultimate height
0.1–0.5 metres
Time to ultimate height
2–5 years
Ultimate spread
0.1–0.5 metres
Growing conditions
Loam
Sand
Moisture
Well–drained
pH
Acid, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Blue Green
Summer Blue Green
Autumn Green
Winter Green
Position
  • Full sun
Aspect

South–facing or West–facing

Exposure
Exposed or Sheltered
Hardiness
H5
Botanical details
Family
Boraginaceae
Native to the UK
No
Foliage
Evergreen
Habit
Matforming
Genus

A genus of flowering, evergreen, shrubby plants from borage family. They are cultivated for their five-lobed, funnel-shaped, blue or white flowers produced in cymes in summer. Leaves are linear, lance-shaped or elliptic, densely hairy

Name status

Accepted

How to grow

Cultivation

Excellent for an open, sunny position with well-drained acidic soil in a rock garden or raised bed

Propagation

Propagate by semi-hardwood cuttings

Suggested planting locations and garden types
  • Gravel garden
  • Rock garden
  • Patio and container plants
  • Mediterranean climate plants
  • Ground cover
Pruning

Pruning group 8

Pests

Generally pest-free

Diseases

Generally disease-free

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