Gromwell

Gromwell (Lithospermum) - A few of these Borage-worts are well worth growing. One of the finest is L. prostratum, a spreading little evergreen having flowers of a lovely blue, with faint reddish-violet stripes, in great profusion when the plant is well grown. It is hardy, and valuable as a rock plant from its prostrate habit and the fine blue of its flowers. Its shoots will fall down the sunny face of a rocky nook, to spread into flat tufts on level parts of the rock garden. On dry sandy soils it forms an excellent border plant. In such soils, it is suited for the margins of beds of choice and dwarf shrubs. It is sometimes grown as L. fruticosum, but the true L. fruticosum is a little bush, and not prostrate. Easily propagated by cuttings. S. Europe.

Buglossoides arvensis (L.) I.M. Johnston corn gromwell

Rock Gromwell (Lithospermum Petraeum) - A neat, dwarf shrub, something like a small Lavender bush, with small greyish leaves. Late in May or early in June all the little grey shoots bear small oblong purplish heads, and early in July the plant is in full blossom, the full-blown flowers being a beautiful violet-blue. The best position for it is in the rock garden somewhere near or on a level with the eye, on a well-drained, deep, rather dry sandy soil. Native of dry rocky places in Dalmatia and S. Europe. Cuttings or seeds.

L. purpureum-caeruleum (Heavenly Blue), a British plant, is a good addition, and its brilliant blue flowers are most effective. L. Gastoni, L. canescens, L. graminifolium, L. tinctorium, and L. rosmarinifolium are very pretty plants, but coming from sunnier lands than ours are not really at home in our climate, and for the most party they can only be grown well on dry ledges of the rock garden in the most favourable districts.

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