A distinctive downward curling of leaf tips or entire leaves, often associated with nitrogen toxicity or, confusingly, also with overwatering and root oxygen deprivation.
Mr. Q observed 'a claw here and there' on several clones in the CO2 room during the walkthrough. He noted that some phenotypes were clawed out (potentially over-fed) while others showed deficiency symptoms, suggesting inconsistent uptake likely tied to waterlogged roots.
Discussed in: Ep 001