Healthy soil and sustainable growing

[Ernest Kuntze <osmogaia2@earthlink.net>]

Hi Charlotte
 I think it is a zone 7 or 8. I don't heat the whole green house I  
use heating mats , on tables ,70 for cool temp. vegetables and  80  
for summer crops i have not turn it off for 10 years, the rest of the  
greenhouse [30 by 96 feet] , is unheated I grow spinach, lettuce and  
salad mix in it. At night in the winter it is from 28 to 35 deg. same  
as out side,but protected from wind and rain,ice and sometimes snow.  
All the rest I grow out side in raised beds covered with row cover
mostly for the deer. In late Feb ,  I will but it all out side it  
will be 35 to low 40 something , by then I hope. my customers think  
it taste better after some frost has hit it ,  sweeter
Ernest