I just now saw the yellow flower you showed us on July 06, 2018. which I believe is Cosmos sulphureus. I collected a few seeds of this a couple of weeks ago and hopefully I may have some flowers in the garden next year.
I was surprised to see that it's an annual, it grows very quickly and may get quite big; it flowers all summer. I also read that this plant was declared invasive by the United States Southeast Exotic Pest Plant Council in 1996, but I have a feeling that almost all plants seem to be declared invasive somewhere in the US; I don't think they are necessarily invasive everywhere. On the other hand, the flowers of all Cosmos attract birds and butterflies, including the monarch butterfly, which sounds good to me.