Although some weeds are considered invasive, others have medical uses, provide animal habitat, and can be eaten by both humans and livestock. That's why it's important to identify plants first before deciding to get rid of them.
I enjoy driving in rural areas and seeing fields left in a natural state. When I see an interesting weed, I photograph it and then try to identify it. I have discovered that some weeds are really useful!
Of course, there are many more flowering weeds than what I've featured here. These are just the weeds I have photographed myself. I know I'll find more as I continue to the countryside. ~~ Burntchestnut