Few people still expect severe frost, but a frost-free winter monsoon is more likely nowadays. Evergreen plants can be transplanted in winter during frost free periods; but you must keep your winter protection ready in case the winter cold returns!
The botanical garden and nursery can always be visited by appointment. Even if you look for inspiration only or are just curious!
Or .. for example because you want to see a red flowering Camellia “Yuletide” in your garden during the Xmas holidays and /or buy one here for only € 17,50; that helps against the well-known winter dip! …