They look like 4 o'clocks.

aye, 3:59 o'clocks ... hummers and sphinx moths love them

Correct :)

The botanical name for 4 O'clocks is Mirabilis jalapa, should you need it for any reason.

Thanks everone. I don't remember planting the seeds in the pot.

You don't need to plant those seeds, LOL. They're rather large and seem to appear from nowhere. Also, the thick roots (tubers?) spread underground. I love 4 o'clocks. DH hates them because they grow all over the yard and I've never planted them. Beautiful little flowers in practically neon colors.

That's the same kind I have here. I love the fragrance - it only comes out late afternoon/early evening - hence the common name. I had some form tubers bigger than 6 inches long.

I've often cut a branch full of buds about to open so we can enjoy the evening perfume inside for a few days.

Seeds are pretty large - bigger than nasturtium, IIRC...

Can I just put in a little reminder here? On this occasion lots of people knew this common plant but there is a specialist forum for finding plant ids right here on Houzz/Gardenweb. Name That Plant! - GardenWebIn the past there have been posts on KT resulting in a bunch of guesses when an accurate id would have been offered in short order over on that forum. Just tag it along with KT when you post, then everyone can see it, both friends here and plant people over there who never come to KT.