Deficiency in flower new grower

  • Thread starter Optics406
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Optics406

Optics406

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Hi everyone I am new to growing and having a problem with one of my plants.
The very top fan leaves are turning yellow/purple and necrotic. My guess it's phosphorus deficiency but not really sure. Only this pheno of skywalker kush is doing this. The other pheno of Skywalker is during well but not stacking flowers like the problem one.

I use nectar for the gods in Ocean forest soil. I did a slurry test and the soil was 6.6ph 659ppm.

Thanks
 
Imzzaudae

Imzzaudae

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If you suspect Phosphorus, Are you seeing Redish stalks?
I'd add a tablespoon of apple cider vinegar to each watering can of water of water. This will bring the PH down a bit. A Tablespoon of Epsom salts in the watering can will give your plant the Phosphorus it needs if it's deficient. Won't hurt if its not. Give it a week.
 
Nectarivorous

Nectarivorous

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If you suspect Phosphorus, Are you seeing Redish stalks?
I'd add a tablespoon of apple cider vinegar to each watering can of water of water. This will bring the PH down a bit. A Tablespoon of Epsom salts in the watering can will give your plant the Phosphorus it needs if it's deficient. Won't hurt if its not. Give it a week.
How does adding magnesium sulfate provide phosphorus? Forgive my naivety I'm a new grower myself.
 
Imzzaudae

Imzzaudae

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Good catch. I likely would have caught it myself if I had re visited the thread sooner. I guess a bowl of bubble hash before sitting down at the computer may have had something to do with my mix up. I still suspect Phosphorus but you are right. I did mess up suggesting Epsom Salts / Magnesium.
 
PauliBhoy

PauliBhoy

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@Optics406 Tell us more about where the leaf was on the plant. Are there many others like it? What pH do you water at? Water source?

Could be calcium, phosphorus or manganese deficiency. @Steve6077 might be right as your output pH seems a bit high to cause a Ca or P deficiency imo.
 
Nectarivorous

Nectarivorous

612
93
Good catch. I likely would have caught it myself if I had re visited the thread sooner. I guess a bowl of bubble hash before sitting down at the computer may have had something to do with my mix up. I still suspect Phosphorus but you are right. I did mess up suggesting Epsom Salts / Magnesium.

Got it! Our favourite medicine does insist on doing this to us... ☺️
 

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