HELP, black growth tips / deformed leaves

Discussion in 'Growing Marijuana Outdoors' started by criticalgrower540, Aug 16, 2019.

  1. Has anyone ever seen this happen ? I am not sure what type of deficiency would result in this type of plant behaviour

    All tips are growing in black , and some leaves look deformed

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  2. Don't you think it looks more purple than black?
     
  3. Yup some strains have purple in them could be that


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  4. Looks like a nutrient burn to me. Flush a few times and hopefully it will recover.

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  5. I agree, it's probably a genetic propensity for purple. I'd be more concerned about what looks like some pretty substantial powdery mildew.
     
  6. These are not my plants actually, just trying to help a good buddy.

    I believe he was only feeding terra brand veg food once per week, with normal ph’d water in between feeds.

    I also should mention I don’t think it would be strain related due to the fact that he has 2 different strains in the same garden, both took on this black / purple trait around the same time

    Despite the issues these plants have grown to be around 9 feet tall since mid May!!

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  7. That last pic was before the issue started.


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