Re: Seed Starting – Tomatoes
I also start my tomatoes in my cold basement; I keep my seed starting rig down there because the cool temps. are better for the brassicas. For tomatoes, peppers and eggplant I usually use rigid foam insulation under the heat mat and around the sides of the flats. You can add and remove pieces to adjust the temperature. We are renovating our house and always have scrap pieces lying around, but you can get a 4×8 sheet at home depot for around $25 and cut it with a serrated kitchen knife. This method also works well with no heat mat in slightly warmer air temperatures; the heat from the light is contained by the insulation.