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Cole_Robbie · November 24, 2017

I have a wood furnace. That was my original idea. But even with a blazing fire and an inflated double layer of poly, I could only get 15 degree above the outside temperature. My furnace is very big, and in an adjacent building. I might have done better with a small stove located inside the greenhouse itself.

I think you hit the nail on the head with the beneficials, though. I have aphids and whiteflies so badly that they are never going away. Controlling them is more realistic than getting rid of them.

November 24, 2017	#94
Cole_Robbie Tomatovillian™ Join Date: Jun 2012 Location: Illinois, zone 6 Posts: 8,407	I have a wood furnace. That was my original idea. But even with a blazing fire and an inflated double layer of poly, I could only get 15 degree above the outside temperature. My furnace is very big, and in an adjacent building. I might have done better with a small stove located inside the greenhouse itself. I think you hit the nail on the head with the beneficials, though. I have aphids and whiteflies so badly that they are never going away. Controlling them is more realistic than getting rid of them.