Sudden gold spots on leaf surface.. Parasites? Disease?

densefoggyforest

densefoggyforest

Member
Hi there, I had some plants doing really well until last night/this morning.

Last night I noticed a little bit of clear shiny spots... right where the gold spots appeared dramatically this morning. It's just on the top surface of the leaf.

It's mostly on my runty little bagseed plant here. I have a much bigger girl vegging beside her. (the bigger plant also just got hit with this, but only barely, so far.)

As you can see by the pictures, something funky is up but I can't find a clear diagnosis by googling "cannabis interveinal gold spots"... haven't found anything exactly like this.

I assume it's parasite-related but I honestly have no idea. I check meticulously for bugs and I haven't seen any.

growing indoor, with organic soil... I fertilize gently with Dr Earth dry amendments and Organic Bonsai Fertilizer pellets. It's been a couple weeks since transplant, so there hasn't been any sudden introduction of new soil.
 

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GBAUTO

GBAUTO

Well-Known Member
I don't think it's bugs.
Looks like the start of a calcium deficiency.
Either not enough in the mix or you have an uptake issue.
 
densefoggyforest

densefoggyforest

Member
Thanks for the replies, but I am still left wondering..

Minbebistillmax said:
Have you checked the PH?
Click to expand...
No. The two soil pH meters I have bought are both unreliable...

That being said, I don't think I should be particularly worried about pH right here because:
To me anyway, this plant is not showing the symptoms of pH being too off.
I only use store-bought, gallons of RO water. No tap water. (which is pretty bad here in my corner of LA anyway)
Generic, Dr Earth soil shouldn't be anything too out of line. neutral to just slightly acidic. It's said that that organic soil can fluctuate and self-regulate pH within small margins.

GBAUTO said:
I don't think it's bugs.
Looks like the start of a calcium deficiency.
Either not enough in the mix or you have an uptake issue.
Click to expand...
Yes, it does look a little like Calcium deficiency, but there are a few things that suggest it's something else
-the color. this is much brighter, shinier, and does not match the more... rusty, dying/burned color of a calcium def.
-this is a film-like layer of something on top of the surface of the leaf, as the third picture shows. it's not based in the leaf itself.
 
P

Psteezy

Member
densefoggyforest said:
Thanks for the replies, but I am still left wondering..


No. The two soil pH meters I have bought are both unreliable...

That being said, I don't think I should be particularly worried about pH right here because:
To me anyway, this plant is not showing the symptoms of pH being too off.
I only use store-bought, gallons of RO water. No tap water. (which is pretty bad here in my corner of LA anyway)
Generic, Dr Earth soil shouldn't be anything too out of line. neutral to just slightly acidic. It's said that that organic soil can fluctuate and self-regulate pH within small margins.


Yes, it does look a little like Calcium deficiency, but there are a few things that suggest it's something else
-the color. this is much brighter, shinier, and does not match the more... rusty, dying/burned color of a calcium def.
-this is a film-like layer of something on top of the surface of the leaf, as the third picture shows. it's not based in the leaf itself.
Click to expand...
Any updates on this? I seem to have the same issue with some of my girls. A clear amberish dried fluid that can be flaked off . Its not throughout the plant either. Pics for reference,
 

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densefoggyforest

densefoggyforest

Member
Hmm, looking at your pics, it's not the same issue I had. Soon after this post, those spots permeated through the bottom of the leaf too, and became holes.

To me, that looks like either waste from a large bug, or something spilled/dripped on the leaf
Good luck, that leaf looks healthy overall so I wouldn't worry about it unless it gets worse!

The plant I had in this post simply got her affected leaves trimmed, and the issue did not come back. :)
 
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