Very few flowers are as dreamy as this. We have a sea of its ethereal powder sky blue flowers in the centre aisles of the vegetable garden where it is the most commented planting in the garden at its height in autumn. S. azurea produces 120cm long lax stems which are tipped with blue flowers from early summer until late autumn. Happiest in sun but will cope with a little light shade. It does need an occasional watering. 80cm x 100cm.