Wildflowers: Garden "Weeds" in Colombia

At least maybe. These two plants grow in disturbed areas (my gardens). As such I suspect they're "alien species". Does anyone recognize them?

 

Hi, I think that the firsts plants that have yellow flowers are Zinnia, likely Zinnia peruviana.

Of what I am sure is that all species (The others also) are from the Compositae family.

 

Thank you much for that id. I will look it up.

 

The two at left look like Acmella sp.
The other two remind me of genus Erechtites. You need to see flowers.

 

Thanks very much. I will look into those.