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masterof101010 started grow question 3 years ago
Does the flowering period count from the day you flip to 12/12 or the day you first start seeing pistils?

I have found only conflicting info on when to start timing an 8 week flowering period.
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Week 10
Techniques. Defoliation
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GreenHouseLab answered grow question 3 years ago
I would go by the day you see the plant starting its pre-flowers. In anyway you'll need to look at the trichome heads to really determine when it's time to harvest. But for the sake of documenting your grow most people will start week 1 of flower the day they switch to 12/12.
DILLIGAF answered grow question 3 years ago
@masterof101010 you will always find conflicting opinions regarding this question However many breeders will Go on the moment the plant shows it's preflowers rather than photo period change Hope this answers your question mate