Simply fill several buckets with water and place them in the rows of your garden. During the day, when the sun is out in full force, the buckets of water will soak up the heat. At night, as the temperatures drop, the heat is released gradually from the water buckets, warming the garden.
Other warming tips:
~ Young Pepper Plants can be kept warm with Milk Jugs- Simply cut the fat part of the bottom of a jug using an exacto knife and slip the jug over the top of the pepper plant. Leave the Jug-Cover on overnight and remove in the morning once temperatures