Optimum Germination Temperature
While optimum germination temperature is not essential for seeds to sprout, they will germinate the fastest at their optimum germination temperature. Most seed will leap out of soil between 70 and 80 F, which is warmer than most homes, which is why heat mats are genius.
Check out the Vegetable, Herb & Flower Optimum Germination charts below! Each is available as a PDF to download the top right, under categories.