Maximum heat?

Axelbro

Well-Known Member

• Mar 22, 2010

• #1

What is the maximum heat limit for weed to grow under?

 

Axelbro

Well-Known Member

• Mar 22, 2010

• #2

bump bump! will rep for answer

 

Axelbro

Well-Known Member

• Mar 22, 2010

• #3

anyone????

 

whitewidow2

Well-Known Member

• Mar 22, 2010

• #4

Axelbro said:

anyone????

Click to expand...

85F or below

70-75 is ideal

 

WidowShamus

Well-Known Member

• Mar 22, 2010

• #5

what up, most people say 75 to 80 during the day and 65 at night are optimal. My first grow I rushed the build and had daytime temps of 95 to 100. Everyone said I was gonna end up with crap but it turned out great. had huge buds and was some of the best weed ive grown. Think about other parts of the world like Thailand where it 100 all day every day. What does cannabis not exist there? anywhere as hot as your hottest summer days are fine in my opinion. Too hot and the plant will curl it leaves, if its not curling its not too hot. Shamus

 

Axelbro

Well-Known Member

• Mar 22, 2010

• #6

thanx man thats great ifo and i was thinking the same,about our climate over the world =)

 

1foryou

Active Member

• Mar 22, 2010

• #7

agree while over 90 isnt great it can with stand it.I had temps as high as 98 last summer yield was normal,buds super dank!!

 

Axelbro

Well-Known Member

• Mar 22, 2010

• #8

but what about seedlings? do they need colder temps or can they survive under full blast 85 temps?

 

1foryou

Active Member

• Mar 22, 2010

• #9

85 anit bad at all.keep the light at proper distance. my 150 is 7 inches away

 

Axelbro

Well-Known Member

• Mar 22, 2010

• #10

okay cheers man!

 

Axelbro

Well-Known Member

• Mar 22, 2010

• #11

i also heard that plants build more THC in hotter climates because of sun protection or sumthing..is that true?

 

1foryou

Active Member

• Mar 22, 2010

• #12

I haven't heard that,usually up to the strain an its phenos.a dark period b4 harvest helps produce more tho.

 

Axelbro

Well-Known Member

• Mar 22, 2010

• #13

ive heard that also,but im sure its just a myth,ive seen no evidence to it

 

Axelbro

Well-Known Member

• Mar 22, 2010

• #14

congrats on ur level up also haha sametime as me =D

 

1foryou

Active Member

• Mar 22, 2010

• #15

lol thx i just noticed

 

WidowShamus

Well-Known Member

• Mar 23, 2010

• #16

Axelbro said:

i also heard that plants build more THC in hotter climates because of sun protection or sumthing..is that true?

Click to expand...

yes and no, its not the heat which increases thc but the lack of water. the crystals you see on a plant( which contain 90% of the THC content of the plant) are a plants self defense mechanism for dealing with scorching sun. I keep my plants in the same heat range from seed to bud by the way. dont starve the plant for water but it you water it less than more you will have much more crystals meaning more potent cannabis. the actual crystals are not more potent just more of them. Shamus
p.s. this is my first grow in extreme heat, not proper ventilation, and no PH meter. just FF soil and some love, lol

 

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edwardtheclean

Well-Known Member

• Mar 23, 2010

• #17

in cali and hawaii it gets to 100 plus, i hope this is the case, my room is 91 right now, geez

 

Buddreams

Active Member

• Mar 23, 2010

• #18

my temps have been reaching 92 during 24/0 light cycle for vegging, and 1 month old. So far so good, i have not noticed any side effects, curling leaves , etc..

 

EsmeWeatherwax

Member

• Mar 23, 2010

• #19

From what I understand if you use Co2 you can run up into the 90s.

 

WidowShamus

Well-Known Member

• Mar 24, 2010

• #20

EsmeWeatherwax said:

From what I understand if you use Co2 you can run up into the 90s.

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yes you would actually HAVE to reach 95 or so for the plant to be able to absorb the extra CO2. Seems like alot of extra hassle though and a little dangerous.