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Yarrow

Achillea millefolium

Flower

Yarrow is a dynamic accumulator of copper, potash, and phosphorus, and one of the most powerful beneficial insect attractors in the organic garden. Its flat-topped flower clusters are landing pads for predatory wasps, hoverflies, and ladybugs that prey on garden pests.

Growing Conditions

Sunlight

Full Sun

Water Needs

Low

Soil

Well-draining loam; pH 5.5–7.0; tolerates poor, dry soil

Spacing

12–24 inches

Days to Maturity

Perennial; flowers in year 1 from transplant; blooms May–September

Growing Zones

1
2
3
4
5
6
7
8
9
10
11
12
13

Thrives in USDA Zones 3–10

Companion Planting

Good Companions

Keep Away From

No known antagonists

When to Plant

  • Transplant

    Spring or autumn

  • Direct Sow

    Surface sow in spring; cold stratification improves germination

  • Harvest

    Cut flat flower heads for drying; divide clumps every 3 years

Organic Growing Tips

  • Plant yarrow throughout the garden as a universal attractor of beneficial predatory insects.

  • Yarrow is said to intensify the aromatic oil content and medicinal strength of nearby herbs.

  • Add yarrow leaves to the compost heap as an activator — it speeds decomposition significantly.

  • Divide and spread clumps around the garden every 3 years; yarrow thrives on neglect and poor soil.

Common Pests

  • Aphids
  • Powdery Mildew

All pest management in Garden uses safe, organic, non-toxic methods only. No synthetic pesticides, ever.