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openmind said:
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Towns77 said:
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Leftfield420 said: we had 30+ days of 100-110°F last summer and I couldn't carry enough water to my plants, plus drought... couldn't get to my plants for 5-6 days sometimes
Damn, I had no idea!
Well, we don't even get remotely that hot!
Yeah, cannabis can not survive without water in conditions like that. I think we only saw about two weeks worth of 90's.
We just have drenching humidity here, with average temps in the mid to high 80's in the summer.
Just a lil anecdote from what I've seen with the plant....
About 6 years ago I had 2 plants that sprouted from some seeds I pulled out of some SFV-OG I grew the year prior...I forget if the plants turned out to be males or why I didn't want to grow them out all the way, but I stopped watering them one day just to see how long they could go with out water since I wasn't planning on growing them out/flowering em.
The 2 plants were in a 25 gallon fabric pot together, the soil/substrate was "roots organics original". The plants received direct sun almost the entire day from sunrise to sunset. Daily temps were around 95F to 105F with humidity around 15% to 25%.
Even after a full week of no water the plants were still looking healthy. IIRC around day 9 they started to droop a bit and showing signs of needing water. I think I pulled em' around 10 or 11 days after no water, they were looking sad/droopy but still could have perked back up with a watering.
No doubt the strain/genetics play a big role in it all, some strains/genes being more tolerant to heat/drought than others...but in general it seems like the plant is pretty tolerant to drought/heat IME. I've never had a plant become stressed from heat, or at least it never visually displayed any signs of such, even with a week+ of 100F to 110F temps. The summers where I used to live/grow were basically 90f to 100f from mid April to late September, some weeks/heat waves around 105f to 110f, a few days up around 112ish.
From what I've seen growing outdoors, the plant can really take a lot of heat & low humidity....tho of course the plants are much happier basking in 80 degree temps versus 100+, they can take the heat with little to no issue.
-OM
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Yeah, that's awesome!
I have never experienced any heat stress from any of my outdoors plants, and I'm telling you, some went for nearly two month with no rain.
Cannabis is the most drought tolerant plant that I have ever grown.
All this talk gets me itching to get going, but I still have along time to go 
I can't wait to snap some pics once the time comes, but until then, I'll just gaze upon all of you all's lovely plants
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