The Oxeye Daisy is also sometimes called Moon Daisy or Dog Daisy. This is one of many plants called a daisy, but when people think about daisies, this is usually what they have in mind. The flower of the Oxeye Daisy is about two inches across. Compare that to the Daisy Fleabane (which is only a half inch across). The Oxeye Daisy also has wider ray petals than the Fleabane, but if you look closely, you will see that the center disk is also a bunch of tiny yellow flowers. These tiny yellow flowers will turn into seeds.