I sincerely hope I am wrong, but they look exactly like one of the weeds I am constantly pulling from my yard.

Impatiens balsamina Garden Balsam ?

I also think it is a weed. I've been pulling several weeds that look like that plant.

In pic 3 the tall plant on the right is a weed. The plant with a heart shape leaf is a bean plant.

Thanks everyone! I was afraid to pull it in case it was actually a veggie plant! Oddly enough they are in some form of a row!

LOL @ soilent green.
These are balsam impatiens.

{{gwi:56406}}

I agree with others. It's a weed.

Can't tell exactly. It looks like some type of amaranth. If the leaf surface is shiny, then it's weed.