Upright perennial with slender spires of white flowers from July to August. Attractive to bees and butterflies.
Sun or part shade. Ht: 3ft (1m)
Cover thinly with compost, grit,
vermiculite or perlite. Keep moist and covered in a cold frame or unheated greenhouse. If germination does not occur after 3-4 weeks a cooling period of 2-4 weeks is recommended.
Best sown in: Late Jan/Feb