Extreme heat beneficials for cannabis? Opinions required.

B.Mean

Active Member

• Mar 9, 2013

• #1

I read in a thesis that extreme heat over 110 outdoors is quite beneficial to cannabis , although slowing growth, but increasing yields?

 

R

Rooty420

Member

• Mar 9, 2013

• #2

At 90 photosynthesis slows down,at 95 it stops and goes into preservation mode.Plants spend energy acquiring water and transpiring it through the stomata to keep cool.So I dont think it is true.

 

navyfighter04

Active Member

• Mar 9, 2013

• #3

B.Mean said:

I read in a thesis that extreme heat over 110 outdoors is quite beneficial to cannabis , although slowing growth, but increasing yields?

Click to expand...

You can read???? 110? Common sense should tell you that 110 is way to fucking hot....But hey, go ahead and try it....

 

Sand4x105

Well-Known Member

• Mar 9, 2013

• #4

B.Mean said:

I read in a thesis that extreme heat over 110 outdoors is quite beneficial to cannabis , although slowing growth, but increasing yields?

Click to expand...

I experiment with my plants, and try to keep them as close to the lights as possible, in veg, with the fluorescent lights... I just did this experiment three days ago, first hand...
I have a laser digital thermometer... the air close to lights heats up...close to 100 [97-103 f]...
I can tell you first hand, the plant at soil is 72... at mid branch it was 82-86 f...[this temp is where tops of plants usually runs...]
Up at the top, the plant was close to 100 for about 24 hours...[18 on 6 off temps fall into high 50's at night]


If I took picture of leaf, and posted picture on here, and asked peeps to guess....
Tips curling, tips brown...
Cal Mag deficient?
Over watered?
Under watered?
No just plain old heat stress....If you must be near lights...Keep the tops of your plants below 90-91 f always...try to keep them under 85 f.......
Remember dryer hot air will also lower your RH....also not good to grow with a RH in the low teens....
Let logic be your guide...

 

A

althor

Well-Known Member

• Mar 9, 2013

• #5

I have seen quite a few plants hermie due to heat issues.
No doubt about it, it was heat that caused multiple strains to hermie.
You can believe excessive heat is good for a plant, but you will deal with the consequences of believing it.

 

Blowin' Smoke

Active Member

• Mar 9, 2013

• #6

Years ago, I had a little growbox in a shed. I live in florida so during July and August it easily would get into the mid 90s.
Normally when I trim a plant it's just a sticky gooey mess, but with high heat, nothing.
They lived in the high heat, but that's about it. The smoke was shit.

 

AZPsyclops

Well-Known Member

• Mar 9, 2013

• #7

I grew for years outdoors in the desert, and even under tomatoe screening, temperatures commonly reached into the 90s and over 100°. What effect it really had on the plant is hard to tell as the season lasted a long time and they all grew into trees anyway. I'd gotten the seeds from commercial weed, but at the end the quality and the yield was pretty damn high.
The Hermie thread might be correct too. I did have two out of five plants go hermi on me last season, but I think this was due to shock from overtreatment for spider mites.

 

AZPsyclops

Well-Known Member

• Mar 9, 2013

• #8

[QUOTE= The admin says this is not Bmeat.