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Brown spot on leaves
sashagrowstarted grow question 3 years ago
I'm experincing a bad situation. Leaves are becoming brown in the margins and I can't understant exactly the cause. Probably there are more causes, some phosphorus deficiency caused by low temperature but I'm not sure that's the only diagnosis.
Someone could help me?
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Robertsanswered grow question 3 years ago
Your showing magnesium deficiency for sure. I would suggest testing run off ph and making sure soil ph is in range. If not that is cause to all nutrition problems . Good luck and happy growing 🌲🌲🌲👊
The8thChevronanswered grow question 3 years ago
Calmag and micronutrient deficiency due to a lockout caused by too much P and K. Bud development is largely done and she requires less nutes in this last week or two. This means it's much easier to burn. Leaves will start yellowing around now anyway so I wouldn't worry too much about the yellowing.
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