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Superb for dense shade. Makes an important feature with large healthy-looking course green leaves forming overlapping mounds. Curious blue borage-like flowers on pink naked stems, appear in early spring, before the leaves take over. Spreads by underground rhizomes and can overun less robust plants and bulbs. Will provide rapid cover in dry shade although the leaves will collapse during very dry spells. H 2ft.
Trachystemon orientalis. This species grows as a wild flower in Britain & Northern Europe. This is a member of the borage family and has small blue flowers and a lax hairy foliage.
They will prefer humus-rich soil. Some of the species are very lime tolerant. You can propagate from seed or cuttings.