This flower goes by a few names including oxeye daisy, moon daisy, marguerite daisy, and field daisy. It is found throughout the United States; however, it is not native to these lands, and in fact it is considered an invasive species. Although it is a pretty flower, it is also considered a widespread weed. Why is it considered to be such a threat? Like many invasive species, oxeye daisies can reproduce at scale. In fact, one plant can produce 26,000 seeds! The seeds remain viable for weeks. Sometimes the flowers grow in dense colonies and outcompete the native plants in that area. Oxeye daisies are also a nuisance to the agriculture industry. In cattle pastures, oxeye daisies spread quickly. Cattle will not eat the daisies, and the ones that do are said to produce unpalatable milk. Because the cattle do not eat the daisies, they continue to spread across the grazing lands. In fact, these flowers spread not only by seed displacement, but also by fragmental regeneration. Oxeye daisies can grow a new plant from a rhizome fragment, essentially an underground plant stem. So, to recap these flowers can reproduce aboveground and underground.