Marshalls Garden Achillea 'cassis' Seeds - 60 Red Yarrow Perennial

Achillea 'Cassis' produces long-lasting, flat-headed red flowers that are excellent for cutting and highly attractive to pollinators. Sow seeds on the surface of pre-watered compost without covering, keep at around 20°C and moist for 1-2 weeks until germination. When seedlings are large enough, pot on into 8cm pots and grow at a minimum of 10°C. Harden off for 2-3 weeks before planting out after the risk of frost has passed, spacing plants about 40cm apart. Cut back in autumn after dieback and divide clumps every 3-4 years.