I grew a plant I now know as the "4 o'clock flower"
https://en.wikipedia.org/wiki/Mirabilis_jalapa
My sister gave me a seed try full of mixed flower seedlings, I asked what flowers were in there, she said she had no idea just mixed. Well grew them on and there was all sorts, I think the sweepings of the floor of a seed producer. Any way one plant got about 2 or 3 feet high then flowered, I didn't have a clue what it was but about sunset ever night it would give off a nice smell till the morning. Sent photos to my sister in Scotland she is a Gardner she found out for me.
Cheers