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bottom fan leaves dying too fast

  • Thread starter Thread starter jagmacdaddy
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bottom fan leaves dying too fast

jagmacdaddy 12 Replies 1,426 Views
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jagmacdaddy

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#1
My plant just started the flowering stage, i noticed that the bottom fan leaves are curling and dying at a very fast rate. This usually happens at end of flowering stage just before harvest.

My normal grow is indoor with advanced nutrients. This grow is outdoor, first 6 weeks the plants relied on the soil, now that flowering has started, I started the Advanced nutrients. It doesn't look like nute burn though, tips are healthy.

Any clue what is happening here?

Image0
 
#2
That fan leave above the spotted one looks like it got chewed on by something? Or did you do that on accident?
 
#3
The causes of black spots are as varied as the strains of cannabis themselves. Fungal infections like Leaf Septoria lay siege to your plants, starting a slow conquest from the bottom up.
Nutrient deficiencies—think of them as dietary red flags—can also manifest as black or brown spots, with potassium and calcium often being the usual suspects.
Then there's environmental stress, the silent killer, which can sneak up on your plants and wreak havoc. Lastly, don't overlook the tiny terrors—pests like spider mites can leave behind their own brand of graffiti in the form of black fecal spots.
 
#6
Jmaes Mabley said:
The causes of black spots are as varied as the strains of cannabis themselves. Fungal infections like Leaf Septoria lay siege to your plants, starting a slow conquest from the bottom up.
Nutrient deficiencies—think of them as dietary red flags—can also manifest as black or brown spots, with potassium and calcium often being the usual suspects.
Then there's environmental stress, the silent killer, which can sneak up on your plants and wreak havoc. Lastly, don't overlook the tiny terrors—pests like spider mites can leave behind their own brand of graffiti in the form of black fecal spots.
Click to expand...
I saw a few mites a month back, it is covered in neem oil now, i haven't seen a mite for 3 weeks though.

as it is getting advanced nutrients now, i dont think it is deficient, maybe it gets too much.. as in, the soil i used is specific for berries, which is supposed to be the same ph as weed. I gave it about 6 weeks where I didn't add anything as it could use the nutes in the berry soil. This is something I never tried before, usually i use pro-mix and manage the nutes the entire cycle.
 
#7
something is eating those plants
look under other leaf- those black spots
is it fungal eating or insect consuming? overall it doesn't look normal so I would hurry to pinpoint it if you entered flower

letting cat in your grow area is the best way to transport funguses, mold and parasites 👍
 
#8
jagmacdaddy said:
I saw a few mites a month back, it is covered in neem oil now, i haven't seen a mite for 3 weeks though.

as it is getting advanced nutrients now, i dont think it is deficient, maybe it gets too much.. as in, the soil i used is specific for berries, which is supposed to be the same ph as weed. I gave it about 6 weeks where I didn't add anything as it could use the nutes in the berry soil. This is something I never tried before, usually i use pro-mix and manage the nutes the entire cycle.
Click to expand...
You mean like for Blueberries? They like a super low pH so that could become an issue. Getting primary and secondary macronutrients could be a struggle for your plant.
 
Last edited:
#9
RootFarmer said:
You mean like for Blueberries? They like a super pow pH so that could become an issue. Getting primary and secondary macronutrients could be a struggle for your plant.
Click to expand...

super low he means
super pow wow wow 🤣

what's you PH?
 
#12
Sunin said:
something is eating those plants
look under other leaf- those black spots
is it fungal eating or insect consuming? overall it doesn't look normal so I would hurry to pinpoint it if you entered flower

letting cat in your grow area is the best way to transport funguses, mold and parasites 👍
Click to expand...
its just one plant on my balconey, i think it is fungal, no bugs
 
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