The timing of sowing Achillea millefolium propagules hinges upon environmental conditions and desired flowering period. Successful establishment often requires careful consideration of both soil temperature and the presence of adequate moisture.
Optimal timing allows for maximized flowering potential and plant vigor. Planting at the correct juncture minimizes risk from frost damage to young plants and allows for better competition against weeds. Historically, knowledge of proper sowing calendars has been vital to successful cultivation of many species, including this valuable medicinal and ornamental herb.