Join the forum discussion on this post - (1) PostsWow! That is all I can say about my recent experience using a warming mat for my newy planted seeds. I had seeds start to sprout in about 8 hrs!! I couldn't believe it. I knew the warming mat was supposed to speed up the germination, but I had no idea it would be such a difference. I am very eager to see how these new seedlings will fare after getting such a fast start.