Yucca capensis: how is it pollinated to fruit

[Giannhs]

Hi! Yucca capensis is nowhere in the forum yet, still i hope somebody knows about it.

Do you think it is self fertile or not? I can grow at least two of them together, will they set fruit then? What about a single plant?

I hope it is NOT like yucca baccata, that would be bad news as yucca baccata needs a special species of insect to cross pollinate and that special insect is obviously not available away from the plant's native range.

I have only seen the fruit of Yucca capensis in photos, is there anybody here who knows more about that fruit? Or about yuccas in general, aren't there self-fruiting species of yucca?

Thank you.