@Cringer
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2 of these are from Linda seeds, one is a Fat Blueberry and the other is Wedding Cake. The third was a gift from a friend. So I know none of them share any genetics. These were planted on New Years Eve, so I am sitting at 42 days from seed, and I have yet to see any flowers. Which is quite odd for me, usually I see some little flowers around week 4.
Maybe this is like that movie Children of Men, where all of a sudden no one can have babies any more, but instead, autoflowers won't flower.
I just switched them from 24/0 to 20/4. If I don't see any flowers in a week, I'll switch them to 12/12 for a few weeks.