You bubble wrap the pot to protect the roots from freezing. You leave the plant uncovered so it can breathe. If seriously heavy frosts are forecast you could cover it with a layer or two of horticultural fleece which gives protection from a couple of degrees of frost without suffocating the plant or trapping moisture that will cause it to rot.
It might be simpler just to plant it in the ground. It will probably need re-potting to a bigger pot next spring anyway.
Vendée - 20kms from Atlantic coast.
"The price good men (and women) pay for indifference to public affairs is to be ruled by evil men (and women)."
Mine (same type - hortensia, different colour) on the day we moved here - prior to living on that front porch it had lived several years in a cold northfacing back yard with absolutely no protection whatsoever.
Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.
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You bubble wrap the pot to protect the roots from freezing. You leave the plant uncovered so it can breathe. If seriously heavy frosts are forecast you could cover it with a layer or two of horticultural fleece which gives protection from a couple of degrees of frost without suffocating the plant or trapping moisture that will cause it to rot.
It might be simpler just to plant it in the ground. It will probably need re-potting to a bigger pot next spring anyway.
Mine (same type - hortensia, different colour) on the day we moved here - prior to living on that front porch it had lived several years in a cold northfacing back yard with absolutely no protection whatsoever.
Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.