On the topic of supercropping. Completely broke the top of my Triangle Kush yesterday. As for when to supercrop, you'll get different answers from different growers. I (usually) have no problem supercropping after stretch or even early flowering, though this time I was a bit too forceful, and maybe a little too close to the node.
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Usually they're perked back up after a day:
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After a week or so