Common Name: Lithodora
Cultivar: 'Heavenly Blue'
Skill Level: Experienced
Exposure: Full sun, Partial shade
Soil type: Well-drained/light, Chalky/alkaline
Time to take cuttings: May to July
Flowering period: June to August
Lithodora, once called lithospermum, has gentian-like flowers during the middle of the summer when few true gentians are blooming. Lithodora is, in any case, easy to grow and flowers well. The evergreen mats of foliage spread slowly to make good ground cover on a rock garden or scree. Unlike many rock plants, lithodora needs a humus-rich soil, rather than a gritty one, so make a special planting pocket for them. Place several rocks close to the plant so the soil underneath remains cool and moist in a hot summer, giving the roots a reliable comfort zone. The Royal Horticultural Society has given it its Award of Garden Merit (AGM).
Looks good with:Penstemon heterophyllus 'Heavenly Blue'
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