I agree with comments above; the main thing to do is keep the roots dry. I have a selection of scented pelargoniums. Most go in an unheated cold frame or greenhouse but a few come inside for the winter. Most survive the cold frame but I usually loose one or two each year.
One thing I remember from dear Geoff Hamilton; he recommended cutting them back, removing them from the pots and wrapping them in layers of newspapers and leave in the garage or shed over the winter. I tried that one year and about half survived so that may be something for @peteS to try.
Based in Sussex, I garden to encourage as many birds to my garden as possible.
My Gardening Granny used to do just that @Redwing … except she stored hers in a cardboard box under the bed in the spare bedroom, which was rarely used so the radiator was turned off most of the time.
Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.
Right. Unless you are potting them up and enjoying the flowers over winter... then some sun is nice. All mine are indoors in pots on the sill and will hopefully keep blooming all winter.
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One thing I remember from dear Geoff Hamilton; he recommended cutting them back, removing them from the pots and wrapping them in layers of newspapers and leave in the garage or shed over the winter. I tried that one year and about half survived so that may be something for @peteS to try.
Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.
All mine are indoors in pots on the sill and will hopefully keep blooming all winter.