when do you usually put your seedlings out in a greenhouse? I have a walk-in poly tunnel, no heat. I regulate the temp with opening door and vent. When is a good time to put out tomato and pepper into the tunnel, and should i put a shade cloth on it? I live near bethany beach, I don't think the temp in tunnel will go below freezing, and I can always bring them in if I have to. They are under florescent lights now in the house. Will the cooler temps and wider temp swing slow down the growth? thanks for any suggestions on this.