Can a low temp slow the harvest timing?

[evanb]

It was a long cold winter. Night temps in the low 60's day in the mid 70's. Does that make a 8 week plant turn into a 10 week plant? Also once the 12/12 switch happens is that when I start the count down, not when the first signs of sex shows 2 weeks later. Sorry for the newb question but I couldn't find answers in the searches.
Thank you!

 

[aridbud]

No. An 8 week plant is an 8 week plant. You can start the 12/12 regimen....you'll get a lower yield rather than going a few more weeks veg time. Count down to harvest? Probably once first signs of puberty occur.....that's when you start watching/waiting.

 

[tokersmoke]

evan you have a ten degree differential between daytime and dark which is perfect.If this is your first time running the strain dont pay attention to seed suppliers flowering time your mileage may vary.

 

[tokersmoke]

And as far as when to start the countdown, IN MY OPINION if the seed plant is mature meaning showing sex in veg light.You can start counting the day you flip.If this is a 12/12 from seed things change and i would start counting when i see pistils appearing.IF you flower clones regardless of height i count from the day they get reduced light hours.This works for me.

 

[choom]

Hello, from what I know production
can be stunned if the temperature
drop is too low, which depends on
the resilience of your strain entirely.
How does she look? Those seem like
pretty warm night temps, I wouldn't
worry lol. Like tokersmoke said that's
ideal, if not ideal, then a perfect temp.
All I was really going to contribute here
when I saw this post was if the night
temp differential drops 15-35 degrees
or so lower than daytime, depending
on the strain, may see some purpling.
That's usually around the last 2-5 weeks
if you're doing outdoor, also depends where.
So with that said, the only time I can
think of temps slowing harvest time/
production is if it's a low enough temp
that your girl is NOT happy, she'll tell ya.
A lot of strains can brave freezing and
some even below zero but not for long.
You'd be surprised how resilient our noble
plant is, any more details on your environment?
I'm feeling you don't have anything to worry
about temp wise, you're not in the Nordic bush!

choom(0:

 

[Squidbilly]

I remember buggin out about the same thing when I started growing in a cold basement. If it's not droping below 60 your golden. Like others mentioned, it could get even colder then that and still be ok. I believe popular opinion is that your flower time starts when your plant actually starts to flower, anywhere from a few days to a week a more after the switch to 12/12. This doesn't mean showing pre-flowers, in the case of female plants, white pistils. When you make the switch to 12/12 you'll notice one day shortly after when they start to flower and that is when the countdown starts.

 

[Squidbilly]

The first sign of sex should of shown before you switched to 12/12. If they didn't it's not that big of a deal, but it's ideal in the future that they show their sex prior to flower. If not it means they aren't mature enough and they won't reach their full potential. Getting back to your case, I wouldn't start counting days in flower until they showed their sex.

 

[theother]

Are people really counting flower times from when flower set occurs? I have always counted it from the day they are flipped. If people do count it from flower set that could definitely make communicating what stage they are at difficult.

To the op, add a dehu if you think it could be useful, that has a way of taking care of low night temps. Generally rh can get high when temps get low.

 

[evanb]

Thank you everyone. It just blows my mind what goes on with this plant. 12/12 then magic happens. Some breeders post days like 56 to 63 days. That is 8 to 9 weeks but then there are still a whole lot of white pistels with only 1 in 500 turning dark which I thought is the key. Something like 50% of them Amber then it is fun time.

So it can be later then the ad claims?

Thank you once again everyone.

 

[stihgnobevoli]

i always, and most people i've ever heard of count the flowering days as in when sex actually shows. outdoors it could take up to 8 weeks before sexing occurs depending on the time of year you plant.

why would you count from the beginning of 12/12? if i start a plant 12/12 from seed it's still not gonna show sex for 4-6+ weeks because it still has to grow to maturity in the first place.

if i have a plant that takes 70 days and i start it 12/12 from seed, it's gonna be 30-40days before it even shows sex. now it's a 110day plant like magic.

you count from when they show sex. not from when you flip 12/12.


as for the temps. i've only noticed stunted growth. mainly. there has been signs that it takes week or more longer before being ready in the winter months vs summer.

cold weather makes uptake slow down. need to water less. way less, feed less. etc all less of it.

 

[barefootseeds]

Light , temp and co2 are the limiting factors of photosynthesis.
Temps get to cold photosynthesis will start to slow down and flowering time can be extended .

 

[evanb]

i always, and most people i've ever heard of count the flowering days as in when sex actually shows. outdoors it could take up to 8 weeks before sexing occurs depending on the time of year you plant.

why would you count from the beginning of 12/12? if i start a plant 12/12 from seed it's still not gonna show sex for 4-6+ weeks because it still has to grow to maturity in the first place.

if i have a plant that takes 70 days and i start it 12/12 from seed, it's gonna be 30-40days before it even shows sex. now it's a 110day plant like magic.

you count from when they show sex. not from when you flip 12/12.

as for the temps. i've only noticed stunted growth. mainly. there has been signs that it takes week or more longer before being ready in the winter months vs summer.

cold weather makes uptake slow down. need to water less. way less, feed less. etc all less of it.

Thank you for that information. So much too learn. So if I would clone these and then put known females into 12/12 I would then wait about 2 weeks before the 1st pistals show then start the count up/down? Sorry about my mental block that I'm having here.

 

[tokersmoke]

Everyone has a different stroke.The flowering time depends on environmental factors and maturity of seed or clone.I have clones that have been going for years that show flower set in days.If you start a seed depending on genetics it will usually show sex under veg lighting ie 18/6 or whatever your flavor within 4 weeks.Some strains take much longer.If you wait till you see pistils then flower the seed plant should finish in the prescribed days.If you start a seed under 12/12 light it usually takes 4-5 weeks to start flowering.Again strain dependent.I hope this clears things up

 

[tokersmoke]

i always, and most people i've ever heard of count the flowering days as in when sex actually shows. outdoors it could take up to 8 weeks before sexing occurs depending on the time of year you plant.

why would you count from the beginning of 12/12? if i start a plant 12/12 from seed it's still not gonna show sex for 4-6+ weeks because it still has to grow to maturity in the first place.

if i have a plant that takes 70 days and i start it 12/12 from seed, it's gonna be 30-40days before it even shows sex. now it's a 110day plant like magic.

you count from when they show sex. not from when you flip 12/12.


as for the temps. i've only noticed stunted growth. mainly. there has been signs that it takes week or more longer before being ready in the winter months vs summer.

cold weather makes uptake slow down. need to water less. way less, feed less. etc all less of it.

You mostly hit on the same points i did.But if the seed or clone is mature then days should start from photoperiod change.