Answer: It would be better to plant it if you could, but since that is not an option you will have to try to insulate the roots as best you can and also protect it from drying winds. Do not allow the soil to dry out (water as needed any time it is not frozen) as this roots will continue to take up moisture to replace that being lost through the foliage. You could try heaping mulch over and around the container and if your porch is windy, also use a burlap screen against the wind. Do not fertilize it until spring, it needs to stop growing and harden off before the winter cold sets in. Good luck with your holly!
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