Otherwise, drip outside faucets just enough so the water flows out in a stream about the size of a pencil in width. This prevents water from collecting inside the waterline and freezing, possibly bursting the pipes. Open vanity and kitchen cabinets at night during freezing temperatures to allow the warm air in the room circulate underneath, so supply lines don't freeze and crack. Inside faucets don't need dripping because the inside of a home is usually warmer than the outside. But, if there is no heat, drip the inside faucets.
Sheets are best because they breathe.
Be sure to remove plastic before the sun hits it because the plastic will burn the tips of the plants. Water outdoor plants deeply during the day when it is sunny. Well-watered plants are less likely to be damaged. It's a good time to trim any damaged or loose limbs. Camellia lovers take heart.