Can i keep a spider plant alive outside this winter?

The only houseplants i bother with are spider plants (or Chlorophytum comosum if you prefer). The flowers of spider plants are not especially fancy but many do become plantlets which can be cut off and potted separately. Thus, when you get one spider plant then you can keep them for years with successive generations. All of my spider plants come from a couple of plantlets i cut off my boss' office spider plant when i worked at a university over fifteen years ago. Unfortunately, i've lost track of what happened to the original ones i had.

Currently i have four potted, though two share the same pot, around the house. I have also another one which i am going to try and keep alive during the winter. Spider plants are resilient though don't like freezing temperatures. I have therefore bought a cloche to try and protect it. So far the plant is doing pretty well actually though we have only just had the first winter blast. Around March i do plan to get a small greenhouse, so if the spider plant can survive in the cloche it will be moved there.