I don't know about this cultivar, but I have the regular Fatsia japonica growing outside; they prefer mostly shade and survive the NW winter without porblems. Mine was originally a houseplant which outgrew its pot and I put it outside; that was over 15 years ago and it is now about 15-20 feet tall with many babies below (If anyone wants a baby, LMK)

Christine

Typical plant ordinarily hardy, as described, but not "without problems." A killer winter will cause part of the top to collapse on many sites. I think min. 10 degrees F. has been claimed somewhere, but this may vary of course as these are often grown from seed and may have varying provenances (wild orgins that differ in winter climate).