Articles about greenhouse cooling
A greenhouse without shade in summer is an oven with plants in it. I’ve walked into polyhouses in July where the thermometer read 42°C and every tomato leaf was curled like a fist. The grower had put off installing shade…
Most greenhouse advice tells you how to design cooling systems. Nobody tells you what to do at 2 PM on a Tuesday when the forecast said 34°C and your thermometer reads 42. That happened to a tomato grower I talked…
A greenhouse without ventilation is an oven. A greenhouse with the wrong ventilation is an expensive oven. I’ve walked into polytunnels in July where the temperature hit 52°C. Plants weren’t growing, they were cooking. The owner had spent serious money…
A greenhouse at 38°C isn’t just uncomfortable. It’s expensive. Tomato pollen goes sterile above 32°C. Lettuce bolts. Cucumber leaves scorch. If your pad-and-fan system is struggling, every degree over target is yield you don’t get back. High-pressure fog systems have…
If you’ve ever walked into a greenhouse at 2 PM in August, you know the feeling. It’s not just hot. It’s the kind of heat that makes you wonder if anything alive could possibly survive in there. Plants feel the…
I visited a tomato greenhouse in Almería, Spain, a few years ago. It was mid-July, 38°C outside, and somehow 26°C inside. The grower had spent €4,200 on a pad-and-fan setup three years earlier. He told me it paid for itself…
