Lithodora diffusa 'Heavenly Blue'

Plant details

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 prestigious Award of Garden Merit (AGM).

Family: Boraginaceae

Genus: Lithodora

Species: diffusa

Cultivar: Heavenly Blue

Plant type: Evergreen shrub

Flower colour: Blue

Foliage colour: Mid-green

Feature: Flowers

Sun exposure: Full sun, Partial shade

Soil: Well-drained/light, Chalky/alkaline

Hardiness: Tender

Skill level: Experienced

Height: 15cm

Spread: 60cm

Time to take cuttings: May to July

Flowering period: June to August

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