If you keep soil temperature at 70°F, germination should occur within 14 to 28 days. At lower soil temperatures, it can take as a long as 100 days for yarrow seeds to sprout.

How fast does yarrow spread?

Plant size comes in at 18 to 24 inches tall and 24 to 36 inches wide. Yarrow opens flowers in summer over a period of four to six weeks or more. A host of varieties and hybrids exist, extending this wildflower’s color range from white or blush pink to a rainbow of hues.

How long does it take for yarrow to flower?

Botanical NameAchillea millefoliumSun ExposureFull sunSoil TypeSandy, loamy, clay, well-drainingSoil pH4 to 8 (acidic, neutral, and alkaline)Bloom TimeJune to September