Many stems with masses of attractive, intense cherry red flowers, over a very long period. Achillea Cassis is a first year flowering perennial, making an excellent border filler and cut flower.
Sowing Time: February to June or September to October. Sow seed on the surface of lightly firmed, moist seed compost in pots or trays. Cover seed with a light sprinkling of compost or vermiculite. Keep at a temperature of between 15-20C (59-68F). After sowing, do not exclude light as this helps germination. Keep the surface of the compost moist but not waterlogged; germination can take 1-3 months.
When large enough to handle, transplant seedlings into 7.5cm (3in) pots or trays. Gradually acclimatise to outdoor conditions for 10-15 days before planting out after all risk of frost, 45cm (18in) apart. For best results, provide any ordinary, well-drained soil in full sun.