Heat stress?

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StOnEr4FuN

Active Member
This is my first time growing. I have my three plants in my attic (which is like 95 degrees during the day). The attic has two windows and I have a fan in one of the windows for ventilation and air circulation. I have two lights for the three plants. One light is a flourescent and the other is a 150watt blue light bulb in a metal lamp shade(don't know name or anything) I water the plants and use a spray bottle to mist the leaves like every other day. i have the light cycle at like 18hours day/6hours dark and I have it set up so the 6 hours dark are during the peak daytime when its the hottest. I noticed some of the leaves are dying off and some are browning. Could that be from heat stress and if so, any suggestions on how to fix problem without moving the plants?
 
silvernomad

silvernomad

Well-Known Member
It is to hot up there at 95.........You need to have the temp between 70 and 80 up there if you want those plants to be happy. :leaf:
 
Tanya

Tanya

Active Member
The heat is in most cases a problem.. unless you have a high CO2 Level.... iv had plants do well at those tempratures with the aid of a CO2 Generator. you will also need to bring up the humidty as dry high tempratures increases the risk of Spider Mites... which we all know is a pain in the butt..

xTANYAx
 
Widow Maker

Widow Maker

Well-Known Member
P.R dude said:
theres no need to spray your leaves.



:leaf: :hump:
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But it isnt a bad thing. It helps keep dust and bugs off your plant. Just dont do it when the lights are on.

I would probably get rid of this blue bulb and just use flourescents. Unless you can afford to get a hps or mh light.

Its pretty hard to grow inthe attic. Thats where all the heat in the house is. I tried it once and failed.

Good luck!
 
waytogrow

waytogrow

Active Member
I have Six hybrid sativa plants growing in my closet and i never close the closet door due to my Hps 1000 watt generates quite a bit of heat but i closed the door one night and three of them shrivled enough to notice quite well is there a way they will still live or is it hopeless???
 
jordisgarden

jordisgarden

Well-Known Member
co2 wont bring down the temp, but it will open up the plants pores so that it can take in nutes....you seriously need to address that heat issue

way to grow, if you still have even two living leafs on those plants then it can be brought back to life.
 
L

LVsFINEST

Well-Known Member
My temps shot up to 88F today for some reason so I've been researching heat stress. I found this:

http://weedfarmer.com/growing_guide/temperature.php

It actually implies hotter is better, assuming the genetics of a plant is not a factor. It states that plants can not only survive at 95F, but also do quite well too. Not sure if there's any truth to it or not tho.
 
Gooogle

Gooogle

Member
my plants are in the veg stage at "high" temps (82-97) and there doing great!! i had a vet. grower look at them and he laughed because he was shocked at how well they are doing . unless there wilting badly or not growing i think your ok . my plants do have a small amount of leaf curl at the edges other than that there just fine. thats just my experience at least.
 
Chelseys Man

Chelseys Man

Active Member
yeah man i would have to say 95 is a little to hot.. i would say best is between 70 and 80 anything under 60 or above 90 can be harmful your plants
 
Hedgehunter

Hedgehunter

Well-Known Member
GROWERS BEWARE ! i have ruined whole crops thinking my plants could take 90+ heat, they can look fine (esp in veg) but produce airy , fluffy awful weed, do what ever it takes to lower your temps or get Co2 guys !!
 
meofcurse

meofcurse

Well-Known Member
well i live in an awful city were co2 is really high.but my plants seem to love it.my temp is 85-95 i am in flowering and my buds seem to be ok.day 23 and they dont seem fluffy.i would say the opposite.
 
meofcurse

meofcurse

Well-Known Member
well it depends on the strain of course.sativas seem to be ok with high temp some african indicas too.
 
ganjman

ganjman

New Member
A quick tip - have the dark cycle at night... then it's darker for the plant and cooler - and obviously, this is how the plant would grow in nature - the nighttime aint going to be the hottest part of the day, is it?
 
Hedgehunter

Hedgehunter

Well-Known Member
i dont understand your post ganja ? my dark cycle is during the day, the colder nightime offsets my light heat, i couldnt run my lights in 85+ mid day temps , my growroom would be 105 +
 
meofcurse

meofcurse

Well-Known Member
Hedgehunter said:
at day 23 you will not notice, and even in the city the Co2 ppm will not be more the 600.

goodluck !
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you think so?maybe youre right but they look great.well my city is really really polluted.athens is the name(not the american were REM were from;))
greece.
 
ganjman

ganjman

New Member
Hedgehunter said:
i dont understand your post ganja ? my dark cycle is during the day, the colder nightime offsets my light heat, i couldnt run my lights in 85+ mid day temps , my growroom would be 105 +
Click to expand...

Why dont you just get proper ventilation and do it the right way?

GL - you'll need it
 
Cr8z13

Cr8z13

Well-Known Member
ganjman said:
Why dont you just get proper ventilation and do it the right way?
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GL - you'll need it
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Word. My attempt to grow in that kind of heat didn't live up to my expectations. My next grow began in late autumn/early winter and my plants really thrived in the lower temps. The point is that it can be done, but your yield will be greatly affected. Address the heat issue now and you'll be much happier come harvest time.
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