While this first plant looks somewhat like GBL, I'm not that sure it is.

This second plant, below, I've no clue what it may be. The stems have a purple-ish tinge...

This third plant, below, I'm quite confident this is GBL, based upon the leaves and growth pattern....

2nd plant might be a bidens...

Thanks, Carolb... I looked online for images of Bidens plants, but I'm not seeing any similarity in the leaves...

It could be another errant weed - perhaps a solanum?

And what else have you grown in the past?

Thanks, again, Carolb. I've grown a wide number of things in the past, but the leaves don't look like anything familiar. I guess I'll just pull it up, since it seems no one knows what it might be. Tx.

Another vote for Bidens on the second photo. Possibly B. bipinnata.

Ah...now I see....you all are referring to the second photo, which is among the photos of the 'first plant' I was asking about. Now I realize that when Carolb said the 2nd plant might be a Bidens, she was in fact referring to the 2nd photo, of the 1st plant. OK....now I can see how that might be a Bidens. So maybe I'll keep that plant.

So....any ideas anyone on the third plant (which is still a mystery to me)? On on the second plant, do y'all agree that that looks like GBL?

Tku!