I don't think it's heat reflection as I'm watering regularly, like every two or three days, and haven't had much warm, sunny weather. The soil stays a relatively dark to medium brown most of the time. Also, the plants are bushy enough that the soil under them is in shade most of the day. Looks like you're close by to me so my weather has been pretty much the same as yours lately except maybe a little cooler since I'm closer to the Golden Gate & get more fog than you do.This is only a guess but i think its because the soil there prob not watered and its reflecting like crazy, ive seen that when people put alum to shield the roots (in rockwool) from the light but they forget Alum reflects unevenly and you get these what i call punches to the fan leaf. I suggest Water that box in circles what i mean is to a inner circle and the next feed water the outer after 2-4 times you create a nice soil top that dosnt reflect the heat as it absorbs it, thus better root growth too
Now if its HOT (85-99) that Inner circle gonna dry up quick so what i do is water in the morning a inner circle and during high noon the outer.
Same thing happens to my clones if I place them outdoor and dont water the ground first.
Have you got a pic of the whole plant?
With the curling and shit it looks like a touch to much N in my opinion. Not seen it on fan leaves before though.
Are you just giving water?
I've looked around other forums at pics of plants with mosaic virus issues and they don't look like what I've got on these leaves. The pics I've seen have brownish/yellow leaves where mine are a good, dark green but have a strange shriveling going on. Also, some of the leaf tips do this curling, spiral thing. They curl sideways in a little swirl.Looks like a form or mosaic virus or one of its relatives. Usually this is not toooo damaging to MJ plants although it does make them look gnarlly. The virus can be spread by insects, especially the chewing and sucking varieties, plant contact or spread by touching your infected leaves and then touching another leaf which has an injury or opening in the leaf you just touched.
This virus is very common in the typical garden and if you have other plants nearby you can allow this to get out of hand easily. So don't worry too much, just don't handle these leaves more than necessary and keep your insect numbers down.
Good Luck
This is the soil I stared with:What kind of dirt is that? It looks like retardation from possible pre-nutrientized dirt!
I don't think it's the Azatrol. I've sprayed it about 5 or 6 times and haven't noticed any bad effects from it. Also, tons of other people use it all of the time and it has a pretty good rep for working well.I have a similar problem with mine. I thought it was from treating them for spider mites with Azamax because it started right after I began using it.... maybe its not??
look up curly-top disease,my tomatoes have it.its a virus spread by leaf suckikg insects,leafhoppers mostly,all it takes is for them to feed on your plant after they,ve fed on an infected one.it has caused some huge losses in agriculture,beets were almost a total loss for farmers a yr or 2 ago.this only applies to outside grows were insects can travel to ur plants after being infected...molybendum deficency also causes weird looking leafs like that from pics i've seen...they're wrinkling & shriveling up like grampa simpson, only green. The curling leaf tips look weird too. Looked around for a while but haven't seen a pic or description that matches these well..
They look a bit more gnarly in person than the pics show.
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I wonder if over doing it with the azatrol or azamax causes the plant to not up take molybdenum or something?l\molybendum deficency also causes weird looking leafs like that from pics i've seen...