Jo Ann, if you want seeds from it, you can hand pollinate. I had a few BES vines a year or two ago, and they weren't setting seeds, so I got out there with a qtip or little paintbrush and did the bees work for them. After that, I had seeds! They take a while to get ready though, so if you want some I'd get started soon so they have time to fully ripen and dry. Also once they're ready they seem to drop fast, so keep an eye on them!
