I have bought many glaucum seeds with no results. I think it has to do with how fresh they are. I'm starting some Ensete ventricosum seeds that I got from this forum and I actually got a banana with seeds. I've soaked & planted them and have about 15 or so sprouted in a couple weeks. I wish I could find some ensete galucum like that. I would be so happy.
Take a look at the bottom of this thread for some photos.
Where can I get fresh ensete seeds?