That first pic is what I call ragweed. Mine won't eat it. The big plant in the middle of the second pic is something else. Don't know that one.
Now I have to google search lambsquarter and ragweed to make sure I don't have it all wrong...
Thanks a lot for the extra work Fernando...
D'oh! Google search proves me wrong and Yvonne right. I hate it when I have a plant ID all wrong for years on end. Same thing happened with oxalis.