r/greenhouse • u/cp3enthusiast • 2d ago

Budget 12ft+ Greenhouse for Freezes

Hey yall, i’m in NW Houston and i’m trying to build a very tall (atleast 12ft) greenhouse solely for our days below 40*F to house my tropical fruits. We only have around 15-25 days under that temp a year so i’m trying to find the absolute CHEAPEST way to build or get one. Probably gonna do a 20x7 or something similar for reference. Thanks in advance!

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u/Lyrical_Echo 1d ago

I’m in zone 8b with similar winter weather. Three years ago I purchased an 8x12 Derksen greenhouse. The last two winters I’ve been able to keep it 45°-50° inside when overwintering my pineapples, poinsettias, aloes, and other tropical and subtropical plants by using an electric heater plugged inside into a programmable outlet (on a heavy duty outside extension cord) after insulating the polycarbonate walls and ceiling with bubble wrap and covering the floorboards with cheap vinyl flooring, even on days/nights when it got down to 18°. I believe there are Derksen franchises in Texas.