Yarrow

A common perennial weed of turf surfaces. It spreads by creeping rhizomes. Its leaves are feathery, with a leathery feel, typically 5cm-15cm in length, and divided several times into smaller sections; this also makes the plant relatively drought resistant. In a drought stressed lawn it can often be one of the few plants which retain a green colour. It flowers from May to August, having white to pinkish coloured flowers, with each flower head being about 5mm in diameter.