Yellow spots

Having a hard time deciding if this is a calcium deficiency, Ph Down build up, nutrient burn, or a mix of all. I’ll do a run off test tonight or tomorrow, but what would be your best guess at this point?

The yellow spots and tiny amount of tip burn. (It’s hot here so could that also be heat stress?)

here’s my grow log:https://www.rollitup.org/t/canadian-outdoor-auto-grow-log.1075823/page-3

Using KISS method (Maxibloom all the way through) and Promix as my growing substrate (soilless).



Overall they’re healthy, though

It looks like deposits on the leaves. Hard water? Nutrients? Watering splatter?

Mechman60 said:

It looks like deposits on the leaves. Hard water? Nutrients? Watering splatter?

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The white is pesticide (from awhile ago). I DID wonder if the dark spots could be water burn. It is HOT and the lawn sprinkler sometimes gets a plant by accident.

Mechman60 said:

It looks like deposits on the leaves. Hard water? Nutrients? Watering splatter?

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Also, if u look at my log, these plants are flushed only once a week or so, but every feed is 500-650ppm. Recently in this heat they’ve been getting a water (with the feed) daily or every 2 days. These are autos btw.

Actually, looking at it inside under some different light, I think I am see what are tiny bug holes with a discolouring around it (yellow/brown). Maybe that’s all if is. Also the heat!

bc_southbuds said:

Actually, looking at it inside under some different light, I think I am see what are tiny bug holes with a discolouring around it (yellow/brown). Maybe that’s all if is. Also the heat!

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It was 117 here today. My grow tent is always 83 during the day. My Autos seem to be fine at 7 weeks.

Mechman60 said:

It was 117 here today. My grow tent is always 83 during the day. My Autos seem to be fine at 7 weeks.

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good to hear…mine get about 85-90 all day in the sun and is going well for the most part. First time I ever found spots and discolour, but I’ve also been aggressively feeding them so who knows what it could be.

Third pic down looks like powdery mildew. The penultimate pic from the end has a curly trail on the leaf that looks like leaf miner bug.

Forget those lower 3 or single leaf - they are early leaf sets ….. they are the first leaves to go sideways as plant pretty much uses and discards over grow. Possible bug issues too - however starting a IPM ( prevention ) started wouldn’t be a bad thing. Maybe a simple RTU spray like Captai Jacks Bug brew. Try to resist be over obsessed with every blemish …… plants are outside.

Plants lookin good.

Doleritejack said:

Third pic down looks like powdery mildew. The penultimate pic from the end has a curly trail on the leaf that looks like leaf miner bug.

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good eye pointing out the powder, but I forgot to say that it’s from some powder based pesticide I was using awhile ago…I’ll look up leaf miner bug. Thanks!!!

Budzbuddha said:

Forget those lower 3 or single leaf - they are early leaf sets ….. they are the first leaves to go sideways as plant pretty much uses and discards over grow. Possible bug issues too - however starting a IPM ( prevention ) started wouldn’t be a bad thing. Maybe a simple RTU spray like Captai Jacks Bug brew. Try to resist be over obsessed with every blemish …… plants are outside.

Plants lookin good.

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I’m 80% certain that the bug is grasshopper. See how I put the pots on the ‘grass’ and raised them? Well, lots of clover growing in and around there — like chocolate for grasshoppers. When they were way smaller I hit them back with some pyrethrin powder (Doktor Doom), but have since allowed them to nibble, just as long as it’s not locust-level devouring or messing with the bud sights. The alternative would put too many beneficial insects like these Blue Damselflies and bees at risk. This one here caught a cabbage moth. Those suckers lay the worst worms on all sorts of garden variety plants and flowers. The bee count is low this year, so they need a fighting chance.

here’s a leaf that made me think magnese deficiency, but look at the rest of these plants…they’re on fkn cloud nine lol. (Thank you weather gods.) you’re right about the lower nodes though, it’s just like any other plant out there, leaves shed.