Description
Lithodora diffusa, also known as Lithospermum diffusum, is a low-growing, evergreen perennial that produces stunning blue flowers from late spring to early summer. The plant is native to the Mediterranean region and grows in a spreading, mounding form, with small, lance-shaped leaves that are covered in fine hairs. The flowers of Lithodora diffusa are a brilliant shade of blue, with a yellow center, and are arranged in clusters along the stems. This plant is perfect for rock gardens or as ground cover, and looks great when planted with other low-growing perennials such as sedums, thymes, or creeping phlox. It prefers well-drained soil and full sun to partial shade.
Key Facts
- Common Name(s):Gromwell ‘Heavenly Blue’
- Hardiness:Fully hardy through most of the UK
- How big will I get? Lithodora diffusa ‘Heavenly Blue’ can grow to a height of 0.2m and a spread of 0.5m.
- Did You Know That:The name Lithodora comes from an Ancient Greek word meaning ‘stone gift’?
Plant Calendar
A rough guide to how this plant will change through the year.
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Care Guide
Soil Requirements
Lithodora diffusa ‘Heavenly Blue’ prefers soil with good drainage and does not tolerate standing water. This plant is not tolerant of alkaline soil, it requires either a neutral or acidic soil to grow.
Best Position
Lithodora diffusa ‘Heavenly Blue’ can handle either an exposed or a sheltered position and requires full sun to thrive, this consists of more than six hours of direct sunshine per day.
Maintenance
Lithodora diffusa ‘Heavenly Blue’ can optionally be tidied up immediately after flowering if there is any long unseemly growth. It can then be pruned again in early Spring removing any damaged leaves or stems.
Pest, Diseases and Wildlife
Lithodora diffusa ‘Heavenly Blue’ is generally pest free, and it tends not to have problems with diseases. It is not considered to be toxic.
