1. Cover Them Up
The most common solution for impending frost is to cover your plants with an old sheet or blanket. Use stakes taller than the plant and your covering to create a tent around it. Make sure the cover doesn't come into contact with the plant as the freezing temperatures will be transferred to the plant. Make sure you remember to take off the coverings during the day though so you don't fry your plants!
2. Water
Moist soil holds more heat than soil that is dry. Watering your plants a day or two before the frost is expected can help protect your plants. Make sure to not fully saturate the plants while temperatures are low though as this will injure the plants. Light watering in the early evening before the temperatures drop helps to raise the humidity levels and keep your plants warmer.
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