The large one looks like Zantedeschia aethiopica.

Could the small one perhaps be one of the multitude of weedy solanums?

[flora, did you ever re-try your old user-name to see if the site software rejecting it was just a temporary hiccup?]

No, I haven't tried my old name again. This one works and automatically logs me in. I'm nervous that if I start playing around with the login it'll all collapse around my ears again ;-)

Yeah, I can relate to that.... My PC needs more memory, and it's highly unlikely I'll do anything until it totally crashes.

Smaller one reminds me of Osteospermum.