In message , Jaques
d'Alltrades writes
Certainly looks like RBWH. They are quite pretty, and can make a good
addition to the garden as long as the tops are removed befor the seeds
ripen and get blown everywhere - *HOWEVER* they propagate with
underground runners as well, so unless you can contain it, it's far
better zapped.

But elephant hawkmoths love them and they are so beautiful!

--
Klara, Gatwick basin