Okay so I bought some herb kits on sale at TSC a few weeks ago and planted them oh maybe a week or two ago and they still haven't sprouted yet It is very sunny in there but it has been cold lately. When I first put them out there it was warm because the heat was broken and stuck on lol but it has since fixed itself so now it's cold again. So I am thinking that's why they haven't sprouted yet? I have seen that some people use heating pads or similar under them?? I just bought one but I am wondering if that's really the case? If not, I can just return it or use it for chicks or ducklings. No big deal. But if I do use it, do I just like put it under the pots, plug in, and turn on? Or is there more to it? Do I put it on the lowest setting orrrr? Do I put the pots directly on it or in something? It is parsley, basil, and I think chives in each kit. Maybe the seeds are duds?