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Black Stains on leaves...
Doudou3Dstarted grow question 5y ago
Anyones know what is this black Stains on m'y leaves ?
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Leaves. Color - Black or grey
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The8thChevronanswered grow question 5y ago
If you're in flower phase, it's like a P deficiency. Other possibility is critters or your leaves getting wet and burning. Check your pH and look carefully for pests. Otherwise make sure your leaves dont get wet and that you have enough phosphorus if you're in bloom. Cheers!
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