Heat mats provide a gentle warmth to a plants root-zone to encourage healthy and strong formation of roots, even in cold environments! Use a heat mat to ensure that the delicate cuttings of your favorite plant start off healthy and strong. Cuttings prefer temperatures between 75 and 85°F, with the ideal temperature around 78°F. Use a timer or heat mat controller for precision control over the temperature. Free shipping available on orders over $250.