Overview
Lithodora diffusa 'Heavenly Blue' is a groundcover in the genus Glandora, part of the Boraginaceae family. Lithodora diffusa 'Heavenly Blue' grows best in full sun and partial shade, and tolerates well-drained and light soils and acidic and neutral pH. Its UK hardiness is rated H5. Suggested uses include rock gardens, borders and ground cover. It is native to Southwestern Europe.
About
Glandora diffusa, the purple gromwell, syn. Lithodora diffusa, Lithospermum diffusa, is a species of flowering plant in the family Boraginaceae.
Wikipedia contributors, CC BY-SA 4.0 — Glandora diffusa
About the genus
Glandora is a genus of flowering plants in the family Boraginaceae, native to the western and central Mediterranean region; Morocco, Algeria, Portugal, Spain, France, Italy and Greece. It was split from Lithodora in 2008.
Wikipedia contributors, "Glandora", CC BY-SA 4.0 — Glandora
Growing conditions
Best soil and position for Glandora
- Sunlight
- full sun, partial shade
- Soil type
- well-drained, light
- Soil pH
- acidic, neutral
- Soil moisture
- dry,moist
- Exposure
- sheltered
- UK hardiness
- H5
Plant details
Lithodora diffusa 'Heavenly Blue' size, habit and characteristics
- Plant type
- groundcover
- Suggested uses
- rock gardens, borders, ground cover
- Native to
- Southwestern Europe
Care notes
Pruning and caring for Lithodora diffusa 'Heavenly Blue'
- Cultivation
- Prefers well-drained, acidic to neutral soil in full sun or partial shade. Avoid waterlogged conditions.
- Pruning
- Light pruning after flowering to maintain shape and encourage bushiness.
- Propagation
- Semi-ripe cuttings in summer, seed propagation possible but less common.
Frequently asked questions
How do I grow Lithodora diffusa 'Heavenly Blue'?
Prefers well-drained, acidic to neutral soil in full sun or partial shade. Avoid waterlogged conditions.
Where is the best place to plant Lithodora diffusa 'Heavenly Blue'?
Lithodora diffusa 'Heavenly Blue' prefers full sun and partial shade. It suits sheltered positions.
What soil does Lithodora diffusa 'Heavenly Blue' need?
Lithodora diffusa 'Heavenly Blue' grows best in well-drained and light soil. It prefers acidic and neutral soil. Aim for soil that stays dry to moist.
How do I prune Lithodora diffusa 'Heavenly Blue'?
Light pruning after flowering to maintain shape and encourage bushiness.
Is Lithodora diffusa 'Heavenly Blue' hardy in the UK?
Lithodora diffusa 'Heavenly Blue' has an RHS hardiness rating of H5, meaning it is hardy in most of the UK, tolerating -15 to -10°C.
How do I propagate Lithodora diffusa 'Heavenly Blue'?
Semi-ripe cuttings in summer, seed propagation possible but less common.