arrow () is a perennial flowering plant in the Asteraceae family, that is native to temperate regions in Asia, Europe and North America. It was introduced as a food for livestock in Australia and New Zealand, where it has become a common weed and spread widely over a variety of habitats. It has a powerful sweet scent, similar to chrysanthemums. In the garden, yarrow is a food source for many insects, and various birds such as starlings use it to line their nests, possibly to inhibit parasites. It
