Help cannabis leaves turning black

710adrian

New Member
I’ve been train this plant for a while manifolding and I topped her yesterday for the 3rd time and the leaves started turning black any info on how to fix?!?!?!49AE7F0B-2471-42E2-889B-8EAA9E1772A1.jpeg
 

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It could be Phosphorus deficiency. The cause might be a few things though.

- What nutrients at what levels are you feeding
- What medium are you in?
- How old are the plants?
- What size pot is the plant in?
- What pH are you using for your water and water/nutrient mix?
 
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I don't recognize the symptoms Adrian, check out this chart you may find it there.

Click on the chart to enlarge it.

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1590072998724.jpeg

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It could be Phosphorus deficiency. The cause might be a few things though.

- What nutrients at what levels are you feeding
- What medium are you in?
- How old are the plants?
- What size pot is the plant in?
- What pH are you using for your water and water/nutrient mix?
I use advanced nutrients every 2-3 weeks using 5 gallons plant is about 2-3 months and ph perfect technology from advanced nutrients
 
It’s called manifolding

I know what it's called. I've been growing for decades. But there are literally no leaves and what's there are unhealthy and turning purple. Where is photosynthesis going to take place? The plant needs leaves to make food and grow. I'm also not a big fan of playing with plants for so long. By the time you start flowering that I could have harvested.
 
Well every once in a while I don’t wanna nutrient burn them it’s only this plant having problems And 5 gallons atm was going to transplant to 50 the end of this month but not sure on this one if it doesn’t fix up
 
I know what it's called. I've been growing for decades. But there are literally no leaves and what's there are unhealthy and turning purple. Where is photosynthesis going to take place? The plant needs leaves to make food and grow. I'm also not a big fan of playing with plants for so long. By the time you start flowering that I could have harvested.
Your just old school the benefits of this are great it’s just this one messing up its not the manifolding might be genetics my others are doing great.
 

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