Can't tell if mold or deficiency or toxicity

some leaves have crust like shapes on the edges with black spots on top.
But the bottom of leaf is clean
this plant is 9 weeks into flower

Looks like bug damage. Most likely thrips. The best way to get rid or them is monterey garden insect spray or something with spinosad in it. 9 weeks in flower is probably a little late to spray them with anything, if you have plants in veg you can treat those for now.

KryptoBud said:

Looks like bug damage. Most likely thrips. The best way to get rid or them is monterey garden insect spray or something with spinosad in it. 9 weeks in flower is probably a little late to spray them with anything, if you have plants in veg you can treat those for now.

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can i use lady bugs to kill them?

get a closer look at it and see if anything is on the leaves.

9 weeks into flower, unless its some 14 wk strain t should be close just chop her

its a sativa dominat hybrid, White widow.
its going to get chunky now maybe chop next week

Uberknot said:

get a closer look at it and see if anything is on the leaves.

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To me it looks like the trichomes turned black or something.
I have not seen any bugs.
I have fans on bottom and top on 24/7

Bug free deficiency? Lol thats gnarly if it ain't thrips/mites

I think its black mold mixed a nut lock out? idk
I found it on some larf. it looks bad...
Do I have to harvest now?

Alec420 said:

some leaves have crust like shapes on the edges with black spots on top.
But the bottom of leaf is clean
this plant is 9 weeks into flower
View attachment 3772963 View attachment 3772964 View attachment 3772965

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That is thrips.

okay then where do i find the bugs?

yea, undersides of leaves. microscopic. get some habeneros and make a tea with 4-8 habeneros, puree into a pint of water, heat to a simmer for 20 minutes (dont boil it) filter out the pulp and spray on your plants thoroughly while lights are out. wash your buds when you harvest or wash while theyre growing. id just do a water cure after treating with pepper spray since its this far into flower

Alec420 said:

okay then where do i find the bugs?

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They're tiny, hard to see and adults can fly. Easiest way i found them was to put a piece of panda film down black side up and give the plant/branch a shake. The larvae are a yellowish color so the darker and smoother the surface the easier it'll be to see them. A microscope or magnifying glass would be useful also.

iHearAll said:

yea, undersides of leaves. microscopic. get some habeneros and make a tea with 4-8 habeneros, puree into a pint of water, heat to a simmer for 20 minutes (dont boil it) filter out the pulp and spray on your plants thoroughly while lights are out. wash your buds when you harvest or wash while theyre growing. id just do a water cure after treating with pepper spray since its this far into flower

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okay, btw i did find bugs in my veg tent.
thrips i believe, just like everyone said.
How effective is this spary?

Alec420 said:

okay, btw i did find bugs in my veg tent.
thrips i believe, just like everyone said.
How effective is this spary?

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complete murder. doesnt harm the plants normally but you're late into flower so have a fan blowing on them after you spray (not while cuz youll end up breathing the stuff in and itll hurt your lungs. wear a cloth over your mouth and glasses while spraying). but yea as you are probably aware if you foliar anything right now you have to look out for bud rot but id spray them anyway. itd be gross to have the insects on and alive after harvesting. spray every 3-7 days normally if you were vegging but thatd be too frequent at this stage, maybe every 10 if you're still ripening by then

i just bought some spinosad, and sprayed it all over my crops. Even in the soil. hope it works