Colder temps good or bad
- Thread starter billy4479
- Start date
stumpjumper
Well-Known Member
I've heard below 75 and they quit producing thc, not sure how accurate that is. I'm kind of curious to this myself. I've never had to worry about cold temps much but I have a new grow location in my basement so I'm worried what the winter months will bring.
Oh wow. Once again over whelming knowledge provided by a mod
Naaa we have funnnn..
Plants will go dormant at 45degree Fahrenheit. 75-78 Fahrenheit degrees is ideal for a plant to grow in.
SmokesLikeBob
Well-Known Member
I say as long as you're not below 65 you're good...And yes some calyxes will start to show a blue tint in colder temps. Never been able to test it myself though, I live on an island and I'm not even able to bring my temps below 79, even with AC.
They show the blue/purple hue because anthocyanin accumulation which causes anthocyanin to build up within plants. While chlorophyll is what gives weed and plants in general their green color, anthocyanin is what makes weed purple, and carotenoid is what will make weed yellow or gold..
billy4479
Moderator
i wish i could rep you twice that what i was looking for thank you man
Why np at all billy
Oh yea and im not picking on the mods lol. Just simply asking that some people double check there facts. We all know that myths and rumors spread on here like wild fire.
Remember the molasses in hydroponics era
SmokesLikeBob
Well-Known Member
Hahahahaha! I remember that one! It's absolutely ridiculous what some people would believe on here!Why np at all billy
Oh yea and im not picking on the mods lol. Just simply asking that some people double check there facts. We all know that myths and rumors spread on here like wild fire.
Remember the molasses in hydroponics era
skunkd0c
Well-Known Member
i see this a fair bit, here in the UK during the winter months the incoming air is very cold, my Jamaican grape last winter turned very dark red purple /
during the summer months this red/purple colour change was much less pronounced
during the winter if left unheated the lights off temps can be between 55-60f in my grow room
running the temps at 85f is the optimum temp in my grow room, they drink a hell of a lot more and need feeding more, than at 75f, as a result of more heat they grow faster, more noticeable in veg they seem to explode with the hotter temps
you wouldn't need to keep it cold until the last 2 weeks or so of flowering for it to turn red/purple very fast .. so get the benefit of normal running temps and heat , and just run it cold for a few weeks at the end, cold icy air blowing on them will if they are predisposed to the colour change show quickly
i see a video recently of someone using a huge amount of dry ice at the end of the grow, it seemed pretty pointless as a method of enriching co2 ..
although someone said, this is a possible way of bringing out colours due to the cold atmosphere the dry ice creates .. dunno if there is any truth in that
during the summer months this red/purple colour change was much less pronounced
during the winter if left unheated the lights off temps can be between 55-60f in my grow room
running the temps at 85f is the optimum temp in my grow room, they drink a hell of a lot more and need feeding more, than at 75f, as a result of more heat they grow faster, more noticeable in veg they seem to explode with the hotter temps
you wouldn't need to keep it cold until the last 2 weeks or so of flowering for it to turn red/purple very fast .. so get the benefit of normal running temps and heat , and just run it cold for a few weeks at the end, cold icy air blowing on them will if they are predisposed to the colour change show quickly
i see a video recently of someone using a huge amount of dry ice at the end of the grow, it seemed pretty pointless as a method of enriching co2 ..
although someone said, this is a possible way of bringing out colours due to the cold atmosphere the dry ice creates .. dunno if there is any truth in that
billy4479
Moderator
right i still see people to this day any thing they see there like put some molasses [video=youtube;YsY2-yi5W74]http://www.youtube.com/watch?v=YsY2-yi5W74[/video]Why np at all billy
Oh yea and im not picking on the mods lol. Just simply asking that some people double check there facts. We all know that myths and rumors spread on here like wild fire.
Remember the molasses in hydroponics era
Duku
Active Member
I Change my temps all the time. More strain, time of year based than anything else.
During the summer my temps are around 75-90. Anything over 100 I get worried. To be quite honest i dont like being over 89. I have FUBAR a few times seeing as high as 118 =( for a day.
Now the winter is coming around am changing out my strains for purple crosses/hybrids and dropping my temps as low as 58-63 lights off in flower.
During the summer my temps are around 75-90. Anything over 100 I get worried. To be quite honest i dont like being over 89. I have FUBAR a few times seeing as high as 118 =( for a day.
Now the winter is coming around am changing out my strains for purple crosses/hybrids and dropping my temps as low as 58-63 lights off in flower.
Mr.Marijuana420
Well-Known Member
not all strains change color w/ cold temps, i grow outdoors, and and its been in the 50's at night for a little while now, , one night went all the way down to 40, and the days, are around mid 50's - mid 60's, my plants are as green as they ever were, so if ur gonna drop temps to bring some color out, make sure u have a strain that will produce color
stumpjumper
Well-Known Member
Why don't you re-read my post. Did I say my answer was facts? Didn't think so.Why np at all billy
Oh yea and im not picking on the mods lol. Just simply asking that some people double check there facts. We all know that myths and rumors spread on here like wild fire.
Remember the molasses in hydroponics era
