Photoperiods when to flip

I have 3 autos growing about 5 weeks left in flower, my next grow will be Critical Kush photoperiods, what is the sign/s showing when to flip from veg to 12/12

Flip based on head space left. Depends on the closest you can run your lights to the top of your plants with your lights as high as they can be. If you can flower with 12" between the max height of your lights and the tops then mark that spot. Divide that height in half, and that's your max veg height. (Based on strains doubling in size in flower stretch) (Or divide by 3 if the strain is known to triple in size.) Good luck.

Some growers flip at 2 months...........I usually flip at 3-4 weeks.

MickFoster said:

Some growers flip at 2 months...........I usually flip at 3-4 weeks.

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Why 3 or 4 weeks, is it to keep her smaller? Also wanna lst early

I would flip when they get mature, probably 6 weeks of veg or more

Jenko said:

Why 3 or 4 weeks, is it to keep her smaller? Also wanna lst early

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My plants grow very quickly.
I flipped at 23 days from sprout last grow and yielded 19.5 oz. from 3 plants.......the pic shows 5, but 2 were males.
Here they are the day I flipped.

Here they are 2 weeks later.

Good luck.

MickFoster said:

Good luck.

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Taht's great info. Thanks for that.

MickFoster said:

My plants grow very quickly.
I flipped at 23 days from sprout last grow and yielded 19.5 oz. from 3 plants.......the pic shows 5, but 2 were males.
Here they are the day I flipped.
View attachment 4871289
Here they are 2 weeks later.
View attachment 4871297
Good luck.

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I just flipped mine at 3 weeks. You have any finished pics? I topped them at the 4th node. So im curious to how they will turn out

Bolo33 said:

I just flipped mine at 3 weeks. You have any finished pics? I topped them at the 4th node. So im curious to how they will turn out

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I don't have any finished pics, but this one is 7 weeks of 12/12.