Sisyrinchium sp? bleu

The precise species of this blue-flowered Sisyrinchium could not be confirmed within the collection; it most likely corresponds to one of the plants known as blue-eyed grass, such as Sisyrinchium angustifolium or S. bermudiana, native to eastern North America and Bermuda. The genus Sisyrinchium, in the Iridaceae, comprises clump-forming perennials with narrow, flattened foliage, forming tufts 15 to 60 cm tall. From late spring to early summer it bears small, star-shaped, six-tepalled flowers in violet-blue with a yellow centre. It thrives in cool, well-drained soil, in full sun to part shade, with moderate watering during growth.