I was wondering how you kept that greenhouse heated... if at all.

Steve, have you considered adding a mini-waste oil burner? Not sure what teh local regulations are there but some people have welded up burners to heat their garages using waste engine oil and fry oil. It appears to burn pretty clean if they are built with good air flow and heating chambers. I feel for you guys in the central and northern states right now...and any time as you brave the elements to grow citrus in colder climates.

How did the greenhouse fare, Steve? I had my plants in the (insulated) garage, and it got down to 50*F with the door open and a fan blowing in from the house. Outside temp was down to 2*F. Never mind the 4925 watts used to power the grow lights for 12 hours daily!

Tom; I just got home from a 8 days in perkiomenville Pa about an houre ago. I won't know ubtill tomorrow morning when it is light outside. The 55MPH winds did no damage so it looks good for the trees. We had -7F temperatures 1 night and single digit temps for 2.5 days while I was gone.