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Probably both a clear plastic sheet to trap sun by day and garbage can.larkspur said:We are headed for a few nights of below freezing. My peach tree already has fruit and my early blueberries are blooming. For the blueberries, which would provide the best protection, a plastic garbage can or a sheet?
If you really get serious, cover bushes with plastic and place 100W light bulb under the plastic to keep the air warm. I used to put a light bulb in the engine compartment of my car when the overnight temperatures were -20°F (-29°C). It worked.
We had a few snow flurries today.