How long should I leave the heating pads under my seedlings trays? I have vegetables and some herbs, all started in the first week of February. I am wondering if the lettuce,tomatoes and eggplants all need the same amount of warmth. None of us are going out to the garden until the snow melts but I don't want to fry their little roots off !
Norfolk County Massachusetts
The heating mats are to aid in faster germination. Seedlings grow rapidly if left on the bottom heat and have a hard time hardening off later. I recommend removing the bottom heat once the plants reach two real-leaf stage.
UConn Home and Garden Education Center