Flowers: Summer

Height: 18 inches

Position: Full Sun

Germination: Easy

Aftercare: Easy

Description: From uniform and compact plants rise silvery erect stems bearing many silver-green calyx, from which a firework of small clear blue flowers emerge.

Sowing Instructions: Sow in February/March on the surface of a good seed compost. Make sure that the compost is moist but not wet and seal in a polythene bag until after germination which usually takes 2-3 weeks at 18-25C (65-75F). Do not exclude light which is beneficial to germination.

Growing Instructions: Transplant when large enough to handle into 7.5cm (3in) pots and grow on in cooler conditions. Gradually acclimatise to outdoor conditions for 10-15 days before planting out after all risk of frost, 30cm (12in) apart in a sunny spot in ordinary garden soil.