Achillea millefolium, commonly known as Yarrow, is a perennial herb native to temperate regions of the Northern Hemisphere, including North America, Europe, and Asia. It typically grows 0.3 to 1 meter (1 to 3 feet) tall and is easily identified by its finely divided, feathery leaves and flat-topped clusters of small, white to pale pink flowers that bloom from late spring through fall. Yarrow thrives in a variety of habitats, including grasslands, roadsides, and open forests, and is highly drought-tolerant. It supports pollinators and other beneficial insects, and has a long history of use in traditional medicine for its astringent and anti-inflammatory properties.