I often see this very fleshy weed popping up here and there and they grow fast. Our garden has been neglected for the last few weeks because of the extreme heat this summer we never want to go outside, so here it is bigger than ever. They pull out of the ground fairly easily. I think I saw one of these flowering in the wild once and I thought it had yellow flowers, but I am not sure if it was the same thing since I could not get up close (brambles in the way). Anybody know what this could be? It is growing in southern Ohio in partial shade.