I harvested my first experimental crop of winter produce today. our night time temp has been as warm as 55 and as cool as 34 over the last 30 days. The Spinach has a normal cycle of 28 days from planting to harvest but the shorter days lengthened it to 33. The flavor of the Spinach seems to be superior to normal season Spinach. I have used a 10" tall raised bed with transparent plastic sheeting draped over it in a "covered wagon" style using dowel rods to support the plastic. The success of this first attempt at cheating winter has bolstered my confidence. Im going to replant the Spinach and see how the results change now coming into the heart of the cold season. I live in the 7 zone.
Reference : The Winter Harvest Handbook
by Eliot Coleman
Reference : The Winter Harvest Handbook
by Eliot Coleman