Trying to Diagnose Fan Leaf Spots

[Hokieokie]

Hey all, I'm a new grower this year, and brand new to the forum. One of my plants started flowering about 2-3 weeks ago and have developed these spots. I can't seem to diagnose from any images online as to what exactly the culprit is. I haven't noticed any insect infestation. I started feeding it Foxfarm Big bloom and Tiger bloom, but have only fed it 2 times, and with about a quarter of the recommended dosage over the last 2 weeks.

I'm growing from seeds, started back in April/May. It is a little over 6' tall now in 15 gallon fabric pots. It's in Foxfarm's Strawberry fields soil, and I water it about every 3 days or so if we haven't had any rain. I try to use rainwater, but sometimes have to use tap, but I don't know it's PH. It's typically in the 90s daily here and moderately humid. I'm not sure what my soil PH is either, but I'm going to try to test it this weekend to see make sure it's not nutrient lockout.

 

[Moe.Red]

Welcome to the farm.

I am not seeing any picture?

 

[Hokieokie]

Oh really? I just opened on my phone and it shows fine there too. I’ll try to upload again

 

[JerzeyMike]

Have you used any spray insecticides or foilar sprays? If theres no evidence of bugs, that could be it.

 

[Moe.Red]

I see them both now. I think it got hung up in the new user filter but all good now.

I'm not an outdoor grower, but man it always seems to be some form of bug doing this when you grow outside.

 

[Hokieokie]

Have you used any spray insecticides or foilar sprays? If theres no evidence of bugs, that could be it.

I sprayed some insecticidal soap a few weeks ago, but that’s it.

 

[SchwiftyGrower]

I am currently having a similar issue, but mine is at the very beginning phase. This is what mine look like. I am using FF Beastie Bloomz, but I am personally diagnosing mine as a nitrogen deficiency. I added a top layer of tobacco dust soil additive which is a good natural nitrogen additive. It seems to have helped since, but I’d wait for others inputs as well.

 

[mysticepipedon]

These are not N deficiency symptoms. If adding tobacco dust helped, it might be from the repellent qualities of tobacco dust, because the first problem looks like thrips and the second one may be, too.

 

[Homesteader]

I would treat for thrips and then make sure mineral amounts are decent (calcium in particular) but the first picture doesn't really look like typical calcium to me. Were these leaves like this before you sprayed? The small dots are thrip bites but the big blotches are not.

 

[SchwiftyGrower]

These are not N deficiency symptoms. If adding tobacco dust helped, it might be from the repellent qualities of tobacco dust, because the first problem looks like thrips and the second one may be, too.

Gotcha! Thanks for the info! I know mine isn’t thrip related because they are EXTREMELY scarce where I live. Looking at more images of thrip damage, it looks very very similar to his picture

 

[Hokieokie]

I am thinking mine may be thrip or pest related too, but I just haven't been able to see any. I know thrips are small, so maybe I'm still missing them. I did just spray a little insecticidal soap on the leaves this morning and will try that over the next few days to see if that helps.