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Calcium deficiency in coco — brown spots everywhere
Running coco and getting brown rust-colored spots all over mid-canopy leaves. Looks like calcium deficiency from what I've googled. Already adding CalMag at 2ml/gallon. Not enough?
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3 Comments
Grower2mo ago
Don't panic! This is recoverable. The plant is tougher than you think. Make the adjustment and give it a few days to respond.
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Grower1mo ago
Environment is key here. What's your temp and humidity? Sometimes the symptom looks like a nutrient issue but it's actually environmental.
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Experienced1mo ago
Same thing happened to me when I was overfeeding. Backed off the nutrients by 50% and new growth came in healthy within a week.
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