With the heater - a 1500watt model, it stayed around 40F on the cold nights - maybe a little cooler, but above freezing for the most part. Those are only on the cold nights - of which there aren't usually too many. Mostly it's in the 40's naturally, or high 30's, outside - tho with the occasional arctic blast it'll dip into the high teens outside and the heater will really kick in. So, the nanner has a mixture of warm nights and cool/cold nights but except for two cases of heater failure never below freezing. My goal wasn't to keep up vigorous growth, tho - but to keep it green and alive thru the winter with just moderate growth. The one in the pit greenhouse - unheated - actually did some surprising growing last year. This season I expect it to remain fairly consistantly warm in the pit greenhouse, fingers crossed...
Be well,
Mike
Quote:
Originally Posted by BobbyinNY
Zac,
I second Mike for the most part - I'm just a little scared to let the temps dip that low.. I maintained night temps of about 60f during Jan/Feb in my greenhouse - It was a bit expensive. I used (2) 1500 watt thermostatically-controlled heaters and it worked fine. Cost me about $100.00/month in Heating - not too bad... The most difficult part is controlling the temperature when the sun comes out - it can get hot VERY quick. My greenhouses have a glazed coating (not clear) which helps a bit, but having a constant fan is a huge help too - very important. As far as bugs go, you just have to monitor the plants pretty regularly - watch for little black bugs on the bananas. Don't over-water and open the vents on warm days....
Bobby
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