SunPad Seedling Heat Mats are perfect for every gardener from beginners to professionals. They reliably warm the root zone to 10oF-20oF above ambient air temperature, creating excellent rooting conditions for seedlings and cuttings. When used with a temperature controller and tray domes, growers can dial in ideal temperature and humidity. The mats’ patented double-layer construction is tough and waterproof, which makes them ideal for greenhouses, nurseries, and commercial operations. Using the heat mat together with our SunPackTM Heat Mat Temperature Controller (item SPTEMP) gives gardeners the best possible control of temperature and humidity, ensuring great success with the rooting of cuttings, seed germination, and seedling propagation.