Upright herbaceous perennial with
pure white flowers from June to September. It is easy to grow from seed and will flower in its first year and then will self seed. Attractive to wildlife, especially bees and bumblebees, so good for a
wildlife garden or mixed border. Ht: 50cm (20")
February to June or September to October in pots or trays of moist seed compost and cover with a very fine sprinkling of compost or vermiculite. Keep the surface of the compost moist but not
waterlogged; germination usually takes 7-21 days at 15-20C (59-68F).
Can also be sown outdoors once the soil has warmed, 3mm (1/8 inch)deep in drills 30cm (12 inches)apart in well-cultivated soil
which has been raked to a fine tilth. When large enough to handle, transplant seedlings into 7.5cm (3 inch)pots or trays. Gradually acclimatise to outdoor conditions for 10-15 days before planting out
after all risk of frost, 45cm (18 inches)apart.