bencelest

That's what I used last year during the arctic blast here in California. I even saved the newly planted California gold that was blooming when I planted it last November. I did what Gabe said and as an extra insulation for the roots I spread Christmas lights on the ground and covered them with the glass insulation you put on the walls of a newly constructed house (I got them for free) then covered the ground with black plastics because it rained a lot here. I also wrapped the Christmas lights around the p-stem up to the top. The leaves that did not reach by Christmas lights were fried and the ones with C. lights stayed green when I opened them early on spring time.

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Banana Nut