First greenhouse I have waited 74 years for this believe it or not.Its a lean -to 8x15 x9 at the highest point .I live in NM zone 7 90s to low 100s summer 20s high teens winter. I have insulated around base lower 3ft and 8mm polycarbonate sides and roof and it faces south. I am not sure yet what i will grow but thinking cacti and succulent .My question is (1st of many) is a blue flame propane heater a good choice or is it bad for plants. My propane tank is close to greenhouse
