I am not sure exactly what has happened here. In about a week or so we were prepared to set out our tomato plants, (80 plants). They all were looking good and about a foot tall growing inside the greenhouse. Right before coming in last night I watered them all real good and closed the door to the greenhouse. It dropped down to freezing last night and there was some frost on the ground outside. While the greenhouse is not heated and certainly not airtight I just don't see how it could have gotten to them. There is also a tray of pepper seedlings, (about 50) that were up about an inch that were not affected. Now I will have to overnight some more seeds to make another quick start. Any opinions out there? Todd Panter "Panter Organic Farm"