These innovative plant protectors by Dalen Products give your plants a head start on the growing season by protecting them from early season frost, featuring a series of water-filled chambers that slowly freeze, insulating plants from the cold. Each protector has 18 individual cells that hold almost 3 gallons of water to protect plants in temperatures as low as 26°F and shelter them from the wind. Ideal for tomatoes, peppers, early-season cucumbers, melons and other vining plants.