Actias Rhodopneuma winter feeding ???

Hello there this is most probably a silly question but thought I would ask anyway :).

I have some very health Actias rhodopneuma currently spinning cocoons. I’m based in the U.K . I’ve fed them on cotinus coggygria which they seem to have thrived on . Anyway I can see now the leaves are starting to change colour for autumn so I don’t expect this food plant will be around to raise another generation in a few weeks time so I’m just wondering if anyone knows of anything I could feed larvae on in the winter ? Something evergreen ? It’s probably not possible for me and will start over with fresh eggs next year but just thought I would ask