White and blue Lithodora collection

x 1 Lithodora diffusa 'Alba': the form of the diffuse Gromwell with pure white flowers

x 1 Lithodora diffusa 'Star': a variety with bicoloured flowers in a light blue and white star pattern.

Plant these Lithodoras in sun in well-drained, light, non-calcareous, even somewhat dry soil in summer. In any case, these shrubs do not tolerate limestone or very clayey and waterlogged soil. A mixture of potting compost and peat will suit them. Do not hesitate to plant them on a mound or in a raised bed (20 cm is sufficient) to promote water drainage. Space the plants 40 cm apart. Ideally, grow the Lithodoras from this collection above a wall, between the stones of a rockery, or on a slope. They are perfect in front of heathers that appreciate the same environments. The yellow flowering of gold baskets as well as the whiteness of Iberis sempervirens will perfectly complement the white and blue of the Gromwells. All these plants will also create a great effect in troughs or wide and low pots.