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What's causing these spots on my leaves?

  • Thread starter Thread starter Maria0910
  • Start date Start date Jun 25, 2025
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What's causing these spots on my leaves?

Maria0910 Jun 25, 2025 8 Replies 693 Views
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Maria0910

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#1
So we have been growing for a couple of years. We had some plants slightly overcrowded and got another tent. We have one plant that droops thirsty droops when too wet. Noticed some rust on a couple leaves. We ph our water, using quality nutrients, other plants are thriving. Did turn down lights in case of light burn. Just want input on what might be causing this and how to correct
 
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LoveGrowingIt

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#2
Maria0910 said:
We ph our water
Click to expand...
What's the pH?
 
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HerbalEdu

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#3
nutrient needs may vary significantly from one phenotypes to another. That's not unusual.

not sure at all but may be both Calcium (small brown dot) and magnesium (interveinal discoloration) deficiencies
(but could be a few other thing i think)
 
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HerbalEdu

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#4
HerbalEdu said:
(but could be a few other thing i think)
Click to expand...
(for exemple ph and/or nutrient lockout can sometime result in the same symptoms as some deficiencies or excess)
 
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ArtfulCodger

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#5
It's a balancing act, but I think you were right to turn the lights down. Canoe-ing, interveinal yellowing, and purpling on the leaf veins and petioles all suggest to me that your light was outrunning your nutes/uptake. The dark lesions could be a few things, including calcium.
 
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Silent.Moine82

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#6
Maria0910 said:
So we have been growing for a couple of years. We had some plants slightly overcrowded and got another tent. We have one plant that droops thirsty droops when too wet. Noticed some rust on a couple leaves. We ph our water, using quality nutrients, other plants are thriving. Did turn down lights in case of light burn. Just want input on what might be causing this and how to correctView attachment 2462641
Click to expand...
I read an article this afternoon, I don't remember where saying that sometimes the light may cause that if you wet the leaves, but could be a deficiency as well. I'm no pro yet, but I hope I could help find a solution.
 
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Maria0910

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#7
ArtfulCodger said:
It's a balancing act, but I think you were right to turn the lights down. Canoe-ing, interveinal yellowing, and purpling on the leaf veins and petioles all suggest to me that your light was outrunning your nutes/uptake. The dark lesions could be a few things, including calcium.
Click to expand...
Yeah we added cal mag to our water. Hopefully she will heal up!
 
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Maria0910

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#8
HerbalEdu said:
nutrient needs may vary significantly from one phenotypes to another. That's not unusual.

not sure at all but may be both Calcium (small brown dot) and magnesium (interveinal discoloration) deficiencies
(but could be a few other thing i think)
Click to expand...
We did start adding cal mag to our water and have her a trim. Hopefully she'll perk up soon!
 
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TannedViking

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#9
 
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Thread info

Replies 8
Views 693
Started Jun 25, 2025
Latest post Jun 27, 2025
Starter Maria0910
Forum Cannabis Infirmary

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