Post by Tarantulalover on Apr 14, 2016 15:56:23 GMT -5
So I have Ben trying to grow my carnivores plants in this mini green house and the temperature is usually great in the day Time, but after around 2:30 the sun stops hitting it and it really cools down. Are night temperatures aren't very warm either :/ does anyone know of a good non electric heater that I could run over night to keep my plants happy? Thanks:)
Hi @tarantulalover01 - I feel as though there is a bit of greenhouse information missing from this discussion. Namely, the basics of the thermal responses of greenhouses, which is why and how they work.
Greenhouses are heated by the sun. This means that when the sun goes down, the heat source has been shut off. Whatever was heated during the day will begin to cool. The barrier covering the greenhouse, be in plastic, glass, or some other material can only slow the heat loss - usually by opacity to infrared radiation being re-radiated off the sun warmed contents, as well as reduced convective loss by stopping cold air moving across the contents. The insulation capacity of the barrier is rarely that high, so losses are fairly rapid.
In many ways an unheated greenhouse is like the interior of your car. On a cold sunny day, the inside is quite livable, but at night it chills to, or nearly to the night time low.
This means from the stand point of basic Newtonian physics, if you want your greenhouse to stay warm through the night you need a heat source. All human controlled heat sources come down to two types, fire or electricity (okay there are other things we can do, but it's not how we heat spaces). Those are your options.
Barring adding a heat source, your greenhouse will get cold at night. If you have plants that are sensitive to cold in the structure, it means you'll have to move them daily until nighttime temperatures approach the tolerance of the species. Or just not put them in there until the night time temperatures get warm enough.
I'm sorry if this throws a wrench in your plans and is not what you wanted to hear. Good luck, and I hope you find a solution that works for you and your plants.
-Alex Director of Conservation, Research & Education International Carnivorous Plant Society
dvg: Sarra's safe inside
Mar 31, 2019 20:40:58 GMT -5
bonfield: I've decided to finally reveal my best-kept secret for growing healthy Neps: Just spit on them every few days, the enzymes in saliva help them to better absorb the fertilizer I spray them with!
Apr 1, 2019 14:24:31 GMT -5
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