Four O'clocks

I love these flowers, though my husband calls them weeds. They are really prolific and will spread by seed and underground by roots as well. There is a tuber similar to a carrot and then roots run off that. I have these pinks, and some reds as well. I have also seen white ones and tried to start some in a corner without my husband seeing them! He says they come up every where, but I tell him a weed eater gets rid of them faster than they can grow. So he keeps them controlled with the weed eater. I just wish the bloom was present all day. But evening and early morning will suffice.