Achillea millefolium
common yarrow

Achillea millefolium
Achillea millefolium
Photo courtesy Renee Brecht
Britton & Brown
Botanical name: Achillea millefolium
Common name: common yarrow
Group: dicot
Family: Asteraceae
Growth type: forb/herb
Duration: perennial
Origin: introduced
Plant height: 1 -3'
Foliage: Leaves alternate, finely pinnately divided
Flower: white, heads 1/4" across
Flowering time: June - September
Habitat: dry uplands
Range in New Jersey: statewide
Heritage ranking, if any: n/a
Misc. USDA lists as a facultative upland species.

Most yarrow is not native. It is considered invasive by some authorities. Yarrow was traditionally used  in European folk medicine,  to treat wounds, menstrual ailments, and bleeding hemorrhoids. It was also used to treat fevers, colds, and stomach and intestinal upset.

Yarrow is often used in bird and butterfly gardens. There are a number of cultivars of yarrow as well that are used in gardening.

the Greek mythical figure who used it to stop the bleeding wounds of his soldiers; millefolium, thousand leaved.