When is flowering considered started??

Hey all.. I just realised there are a few differing opinions as to when "Day 1" of flowering starts.
I've got my own log going and considered it to be from the point I switched to 12/12.
I've been reading around and others believe it's from the point the plant changes growth patterns etc.

Where do you peeps stand on this?

Cheers

Personally, I've always timed it from when I go 12/12, rather than when growth changes. Although I continue with veg nutes until a week or so into 12/12.

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Originally Posted by Jungl3Jim

Hey all.. I just realised there are a few differing opinions as to when "Day 1" of flowering starts.
I've got my own log going and considered it to be from the point I switched to 12/12.
I've been reading around and others believe it's from the point the plant changes growth patterns etc.

Where do you peeps stand on this?

Cheers

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It's all just personal preference.
For keeping track of things, I log the day of the photo-period flip. Just simplifies keeping track.

There are three distinct phases in the production of a flower.
1) induction
2) initiation
3) development

A great number of studies have been carried out on the effects of light on flowering. In the inductive stage in photperiodically-sensitive plants, a substance is produced as a result of the Inductive Photoperiod. This substance is transported to the apex where floral initiation takes place. Initiation marks the change in cell differention and development which lead to floral tissues, and the developmental stage includes that time in which the floral tissues develop into mature flower.

Flowering starts when the Inductive Photoperiod begins, either at the 12/12 switch or when placed into 24-36hrs of dark prior to 12/12.

Hope this helps.

Thanks a lot ppl.. much appreciated.
There's just so many differing opinions around its hard to make sense of things and make a decision of your own without some bad advice getting in there somewhere :)

Awesome... as awlays
Cheers

Quote:

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Originally Posted by Loafyboy

Personally, I've always timed it from when I go 12/12, rather than when growth changes. Although I continue with veg nutes until a week or so into 12/12.

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Thanks for the reply lb :)
After doing a fair amount of research and trialing of my own, I have to agree with continuing the veg nutes into the early flower stages (1st or 2nd week tops).
My very first grow I ran out of N around 4-5 weeks, thats from quiting the N the day I flipped to 12/12. Didn't make that mistake this time and... (see attachment) :D
This is day 53 on 12/12.. I think I timed the N running out pretty well this time