Retail nursery specialising in Perennials and Alpines all grown peat-free.
Grown especially for the foliage, but the flowers must not be ignored. From Southern Europe. Plant with rhizomes at soil level.
Light blue-purple, scented flowers up to 60cm (24in) in June. Prefers good, well drained soil in full suncm (24in) wide. Prefers good, well drained soil in full sun.