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Cause for yellowing/brown spots?
Saturate8264started grow question 5 months ago
RQS Royal Jack Auto, 8th week, had yellowing lower leaves before, was advised to use nitrogen fertilizer, didnt work at all. Now after I cut them, its crawling up with spots on some leaves while the leaves at buds look very green. Any advice?
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Leaves. Color - Yellow
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Organomananswered grow question 5 months ago
It was a potassium deficiency, not a nitrogen problem.
You now have a nitrogen over dose.
Giving extra nutrients won't help the damaged leaves, once they are damaged, they stay damaged.
Brown spots can be an indication of a developing calcium deficiency, not a magnesium deficiency.
A magnesium deficiency (initially, intervenal yellowing) would show over the entire plant, not just the lower leaves first.
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GoldenWeedGroweranswered grow question 5 months ago
Magnesium... https://www.growweedeasy.com/cannabis-plant-problems/magnesium-deficiency
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