Yarrow Seeds - Cassis

Yarrow – Cassis

Seed Count: ~100 seeds

Yarrow Cassis is a striking perennial that produces dense clusters of rich, deep burgundy‑purple flowers atop attractive fern‑like foliage. This eye‑catching variety adds dramatic colour and texture to perennial borders, cottage gardens, and cutting beds, and its flat‑topped blooms are a favourite with florists for bold, long‑lasting bouquets and dried arrangements. Hardy, low‑maintenance, and drought tolerant once established, Cassis yarrow thrives in sunny sites and complements a wide range of garden palettes, from soft pastels to vibrant jewel tones.

Pollinators such as bees and butterflies are drawn to its nectar‑rich flowers, making it a beautiful and beneficial addition to pollinator gardens. Whether planted in mass for impact or mixed into perennial beds for contrast, Yarrow Cassis delivers dependable performance and rich seasonal colour year after year.

• Attracts bees and butterflies
• Suitable for cut flowers (bouquets)
• Excellent for dried flowers
  
• Drought tolerant once established
• Long bloom period
• Clumping perennial habit

Plant Details

• Scientific Name: Achillea millefolium
• Life Cycle: Perennial (Hardy in zones 3–9)
• Seed Type: Open Pollinated
• Light Requirements: Full sun
• Plant Height: 18–24 in / 45–60 cm
• Seed Depth: 1⁄14–1⁄8 in / 2–3 mm (surface sow)
• Spacing: 12–18 in / 30–45 cm
• Bloom Time: Early summer to early fall
• Days to Maturity: 70–90 days
  
• Edible / Toxic: Not applicable
• Germination: 10–14 days at 18–21 °C (65–70 °F)

Growing Instructions

Direct sow outdoors in early spring after the last frost or start indoors 6–8 weeks before planting out. Lightly press seeds into the soil surface without covering deeply, as light aids germination. Keep soil evenly moist until seedlings are established. Transplant or thin to proper spacing to allow airflow and reduce disease risk. Yarrow prefers well‑drained soil and full sun and is drought tolerant once established, making it excellent for low‑water gardens. Deadhead spent flowers to encourage continued blooming and harvest stems when flower clusters are fully open for fresh bouquets or drying.

FAQ

Q: Can I dry Yarrow Cassis flowers?
A: Yes! The sturdy stems and dense flower clusters make them ideal for dried arrangements that retain colour and form.

Q: Does Cassis bloom all season?
A: It has a long bloom period from early summer through early fall, especially with regular deadheading.