SunPad Seedling Heat Mats are perfect for every gardener from beginners to professionals. They reliably warm the root zone to 10?-20? 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 the right choice for greenhouses, nurseries, and commercial operations. When used together with our SunPack?Heat Mat Temperature Controller (SPTEMP), growers will have the best possible control of temperature and humidity to ensure great success with the rooting of cuttings, seed germination, and seedling propagation.