Mirabilis (Four O'Clocks) ? If so, flower or weed, depending upon your point of view, and subject to change from the former to latter if they spread too aggressively.

@gyr_falcon that looks exactly like it! Took a look at the seedlings with the peculiar round leaves and it's an exact match. Thank you. They do seem to be getting more aggressive and have been popping up in places like the side of the driveway so I might just get rid of it.

very fragrant flowers that.. wait for it.. open around 4 oclock .. go figure on that .. eh ... lol ...

for me.. in my MI .. an annual... that dies over winter .... that seeds around a bit .. so they come back ... as long as there is snow cover to hide the seeds.. else the winter birds feast on them ....

but a perennial in its native range ... and warmer zones ... so you can see why reseeding can become a problem ... since the older plants dont die ...

i like the striped/splashed ones .. https://duckduckgo.com/?q=emerald+ash+borer&t=ffcm&ia=news

ken