

Hello all! I put a greenhouse in my backyard for the winter here in Southern Louisiana. I purchased this plastic house on Amazon (pic attached) to keep all my tropicals since my collection is too big to fit in the new place.
My problem is it seems like this plastic doesn’t hold heat on for shit. The temperature fluctuates so ridiculously and despite me having 2 space haters running 24/7 for this last winter storm, it got down to 34 one night! What should I do here?
It just doesn’t seem realistic to keep a space heater or 2 running constantly for the entire winter.
The greenhouse gets full sun from like 8:30-4 so it doesn’t get a ton of direct sun.
Second Pic is the temperature fluctuations I’m experiencing the past few days.
by Privileged_White_Kid

3 Comments
I’m afraid that is a battle you are always going to fight with siding like this….even with double all polycarbonate walls on mine, it never stays more that 4-5 degree warmer than out side temps at night…….. Plastic sheet siding is nothing really
Passive heating is a thing…..filling up black barrels with water to be heated when the sun is out, but those talk up a lot of room
A heater of some sort will be required
Go buy 20 bales of straw and build like Lego around it and a light bulb will keep it warm all winter long.
You need better walls and ceiling unfortunately. The R-value of that plastic is basically nothing. That’s why greenhouses have the twin wall plastic panels. The dead air inside acts like insulation.
http://www.littlegreenhouse.com/poly.shtml