Retail nursery specialising in Perennials and Alpines all grown peat-free.
A South American plant, very popular with insects, including butterflies. It will seed readily in well drained ground. Save some seed at the end of each season for insurance purposes.
Award of Garden Merit from The RHS
Purple flowers up to 120cm (48in) from July to September and growing 45cm (18in) wide. Prefers well drained soil in full sun.