Posted: 12/10/2013 at 10:43
I don't see the point of fretting in advance. We get what we get and can't do anything about it except prepare our gardens as well as we can - checking strutcures, pruning back long whippy rose stems, putting cloches or fleece on vulnerable plants and taking cuttings, plaving pots in shelter and so on.
We usually get a week of snow in November. It doesn't do any harm as it isn't really cold yet. Winter here lasts from November to March or even April depending on how deep is the cold and how frozen the ground. Plants do much better when they have a winter blanket of snow than when we just get endless cold which dessicates and freezes twigs and branches and penetrates to the roots.
Worst of all is a warm week in late Feb or early March which gets the plants excited, pushes them in to growth and then wham, winter returns and freezes it all to death. Lost loads of plants that way.