Garden lady says a plant can survive an unexpected freeze by covering with a coffee can and a rock on top. A rock can preserve and ration heat for a plant through the night. Discovered one day when a garden lady expecting high winds and wanted to preserve the plants. She placed a coffee can upside down over a few of the plants. Expecting high wind, she placed a garden stone on a few of the coffee cans to keep them from blowing over. The cans with the stone on top were the only plants that survived the freeze.
Rock and a Garden Freeze
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