Make a Cheapskates style frost cover

Those big striped bags from $2 shops make great frost covers for your precious plants. Simply cut a hole in the base of the bag, large enough to slip it over the plant. At night and when frosts are expected zip the bag up.  During the day, unzip, roll the sides down and let the sun shine in on the plant.  If you think the bag needs support, put a stake into the ground, next to the plant, and zip the bag up over it.  The plant will be safe from cold winter winds and those damaging frosts.