Autos flowering early

More light is (usually) better of course, but why not increase the amount of light hitting the plants for the 18hrs? Then its a win-win...more photosynthesis taking place for even longer!

I fell into this timing trap and am bearing the consequences. My experience is DON'T mix Auto and Photo plants in the same space, unless you stagger the cycles, like Matty said. Particularly if you ,like me, have a very small grow.

Yeah, I got two photo's out of 3 Tran Siberians and 3 THC Bombs and it has really been a pain in the ass. I'm having to run my entire system an extra 1.5-2months. And since I'm in hydro, this includes running my gigantic air pump an extra couple months, which especially sucks. Like you said Goat, maybe it isn't such a biggie for people with plenty of extra time and space.

Aolelon said:

I have 2 autos and 2 photoperiod plants growing, the autos are about 20 days old from sprout and I switched my lighting to 12/12 about a week ago, and the autos are throwing pistils too. Is this normal? I was under the impression changing the light cycle doesnt affect autos.

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It was probably just the plant showing maturity females normally preflower and display sex around the 3rd week anyway males can show almost a week before females from what I've seen

tekdc911 said:

It was probably just the plant showing maturity females normally preflower and display sex around the 3rd week anyway males can show almost a week before females from what I've seen

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It was def flowering. They were only about 12 days old. Something triggered them.
If it was just showing pre flowers, it would have continued to grow, which it did not.