These innovative plant protectors give your plants a head start on the growing season by protecting them from early season frost. These season starter plant protectors feature a series of water-filled chambers that slowly freeze before the plant even feels the cold. Each protector has 18 individual cells that hold almost 3 gals. 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. 18"H x 17"-dia. Pack of three. Once in place fill the Insulated Plant Protector with water up to 2/3 full. This creates a folded teepee at the top to start retaining warmth inside. You may either plant a seedling or small 3-4” plants that are more shock resistant. Allow plants to grow inside the plant protector until it starts to grow through.