Asiatic Lily bulbils

If I sowed (planted?) Some Asiatic Lily bulbils, would they need to be protected over winter?
If the answer is yes, I don't think I'll bother - no space.

 

Given where they come from (Japan) then I would expect the bulbils to be hardy, as in nature if they weren't they wouldn't be much use.

 

Thanks @NigelJ . I'll harvest a few when they're riper and put them in a corner somewhere.