Retail nursery specialising in Perennials and Alpines all grown peat-free.
The secret of over-wintering is to leave cutting back until the spring when the cold and wet weather has passed and new shoots are growing.
Award of Garden Merit from The RHS
Violet purple flowers up to 80cm (32in) from June to September and growing 60cm (24in) wide. Prefers well drained soil in full sun.