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Have you "heard or read" anything on whether or not the the sugars in the plant can actually turn to alcohol from heat? Is that possible? And if thats possible, then could the plant survive the alcohol?
Or do you just read shit and take it as gospel? Bone up on your biology there, cuz the science behind that one is flawed, Sparky.
Yeah, there are strains out there that handle higher temps than others. Introducing CO2 is most effective at around 90 deg F if I'm not mistaken.
Wow...so much love here.
Ed Rosenthal says this:
TEMPERATURE
Proper temperature is one highly variable factor. Most books state optimum grow temperature to be 70-80 degrees, but many list extenuating circumstances that allow temperatures to go higher. Assuming genetics is not a factor, marijuana plants seem to be able to absorb more light at higher temps, perhaps up to 90 degrees. High light and CO2 levels could make this go as high as 95 degrees for increased marijuana growth speed.* An optimum of 95 degrees is new data that assumes very-high light, CO2 enrichment of 1500 ppm and good regular venting to keep humidity down. It is not clear if these temperature will reduce potency in flowers. It may be a good idea to reduce temperatures once flowering has started, to preserve potency, even if it does reduce growth speed. But higher temperatures will make plants grow vegetatively much faster, by exciting the plants metabolism, assuming the required levels of CO2 and light are available, and humidity is not allowed to get too high.
With normal levels of CO2, in a well vented space, 90 degrees would seem to be the absolute max, while 85 may be closer to optimum, even with a great deal of light available. Do not let the room temperature get over 35 C (95 F) as this hurts growth. Optimal temperature is 27-30 C (80-86 F) if you have strong light with no CO2 enrichment. Less than 21 C (70 F) is too cold for good growth.
Low temperatures at night are OK down to about 60 degrees outdoors, then start to effect the growth in a big way. Mid 50s will cause mild shock and 40s will kill your plants with repeated exposure. Keep your plants warm, especially the roots. Elevate pots if you think the ground is sucking the heat out of the roots. This is an issue if you have a slab or other type of cold floor.
As temperature goes up, so does the ability of the air to hold water, thus reducing humidity, so a higher average temperature should reduce risk of fungus.
Contrary to many reports, high humidity is not good for plants except during germination and rooting. Lower humidity levels help the plant transpire CO2 and reduce risk of molds during flowering.
Studies indicate the potency of buds goes down as the temperature goes up, so it is important to see that the plants do not get too hot during flowering cycles. ? D. Gold: CO2, Temperature and Humidity, 1991 Edited by E. Rosenthal.
I simply typed "proper temperatures for Marijuana and CO2" in my Google Search, and Voila!
It would appear that as temps go up, THC production and efficiency seem to drop, at least according to Ed Rosenthal, who is pretty bright.
You CAN go up to 95 degrees, however, Ed feels that between 80 and 86 degrees is best (that is how I had understood it when I set my rooms up...they run at 79 to 84 degrees all the time during lights on) as above 86 degrees can see a decrease in THC content and effectiveness. Above 95 degrees at any stage and growth itself suffers. If you read carefully, you will note that he ONLY lets temps get above 86 degrees in the growth stage, never in flowering.
So...it would appear that your advice may work, thelastpirate, however,, that little bit about having higher THC levels if you don't go above 86 degrees is pretty important, imo. And no flowering plant should ever get above 85 degrees, with or without CO2, imo, as well.
