I have 3 auto's in here. Only planted 1 seed. I pruned the little runt branches.
For shits & giggles I cloned them. The one in the cup.. eh... but the one in the 1gal pot..is going to give me more than the missing branch would have.
Probably double.
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It will grow. Just stunted at this stage, but plant will still live out it's cycles. You may pause the clock on it, but it still finishes out.
The clones vegged each for 3 weeks before starting to flower. Same as the plant I cut from.