Annual fleabane
Annual fleabane flower blooms June to October. The flower 2 - 3cm and white with yellow center. It is called Himejo-on in Japanese.
You can see by roadside.
It blooms in Summer to Autumn.
Annual fleabane and Philadelphia fleabane are closely looks a like.
Different leaf
Annual fleabane leaf has dentate margin. Philadelphia fleabane leaf has no dentate margin and wrap stem.
Different flower
Annual fleabane looks a like Marguerite. The petal is thin. Philadelphia fleabane petal more thin looks a like thread.
Different season
Philadelphia fleabane blooms in april to june. Annual fleabane blooms in june to october. In june, both flower blooms.