Tall weed with yellow flowers
It appears to be Texas Groundsel (Senecio ampullaceus), a cool-season annual herb. It is abundant in sandy soils, and can be toxic to livestock. Heavily infested pastures may be treated with broadleaf herbicides in the future. However, at this time of the year it doesn't make sense to treat with a herbicide. Let it die on its own with the warmer weather within the next month or so, mow it if its a problem.
Thank you so much. We have sandy soil. So that makes sense! It was quite dense Around my chicken coup yard, so I pulled up what I could. We will defiantly spray it next year. I appreciate the info!