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Spots formed over night. V30 outdoor grow

S

subvtech

New member
Here is the first day I noticed them:
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and these are the following day

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and these are other plants and grass in my garden

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I think pythium or black spot. I sprayed fertiligène anti maladies polyvalent on them (I'm in france)

Details:

France 8B zone
In fabric pots.
Soil is mixture of backyard clay soil with store bought soil for sun plants.. it was amended with vermicompost by factory.
There was a lot of rain when this started and before that a head drought.

no perlite but substituted with the sand from my clay light soil.

Gave nutes once (gh flora trio)

Need help.

Thanks GWE!
 

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Not sure what exactly what the problem is. But it's not pythium, it would all be dead and molded.

​​​​​​WHat about the ph? To me it looks like a nutrient/ph issue. The plant is not getting something or it has a lot of something. Very hard to guess without knowing what's in the soil
 
The leaves with the black spot don't look like cannabis leaves to me.

The leaves with the rust spots do. Are these two different plants?

Rust spots need to be treated typically with a change in the pH and perhaps a calmag suppliment.

I haven't had black spots before so can't help with that. Rust spots I get regularly with certain strain of sativa dominants..
 
Bluey said:
The leaves with the black spot don't look like cannabis leaves to me.

The leaves with the rust spots do. Are these two different plants?

Rust spots need to be treated typically with a change in the pH and perhaps a calmag suppliment.

I haven't had black spots before so can't help with that. Rust spots I get regularly with certain strain of sativa dominants..
Click to expand...

Correct. The other leaves are my basil plants that where affected. My jalapeños has these light pin head sides dots that didn't get bigger. Perhaps your right since it's looking like rust now.

I'll check source water ppm, soil slurry ph. Unfortunately, hetting the potting soil info is not possible. Don't know the npk. Could it be burn?
 
Did a slurry test which measured up to 7.3. I gave them about a gallon of plain 6.0. I will check back tomorrow night and see if the pH lowered
 
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