Some leaves are splotchy - not sure what this is

Hi. I have a few plants that have something going on with some of the leaves. I haven’t changed anything since my last batch, and this new issue has popped up.

These are in FoxFarms HappyFrog (with Perlite)

I am watering 28oz every 4 days or so. This is when the plants will start showing they are thirsty.

I just started flowering about 10 days ago.

Thanks for any assistance you can provide.

Check the underside of the leaves - looks like spider mite damage to me.
they’ll be tiny black dots and you may or may not see them moving. They will weave a fine web and lay eggs under there also. If you have a microscope or jewelers loupe they’ll help you see. Any magnifying device really.
If you establish you have mites we’ll go from there but prompt attention is required if they’re there - they can destroy a plant in no time flat and spread like wildfire!

Oh hey - Welcome to the community!
We’re all here to help you and we’ll get you straight as quickly and painlessly as we can!

Best of Luck on your grow and I’ll be watching from my little corner!


I didn’t see black dots, but upon close inspection under a loop, I can see little clear looking bugs with oblong shaped bodies. I’m not sure what possible pests thy could be…


Their color can vary but most often they seem to be dark around here.

You could be seeing the eggs - were they moving?

I can see them moving. They are tiny little bugs - maybe aphids? I have no experience with pests - so this is new to me.

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Did you check out the linked article? There’s some pics in there that are pretty good. TBH I really think it’s mites just looking at the leaves - they poke their sucker things into the leaf from the underside and suck out the goodness. They only have so much pull so after a bit they move o a new, fresh spot and start over. Eventually as the leaf dies in that area it shows on top as dots - which I see pretty well in your pics.

Captain Jacks Dead Bug is the best place to start.
Safe for use at all stages and potent. Any bug will require more than one treatment with pretty much anything. Mites can adapt to poisons in a generation or two so you should use something else, like Garden Safe, for a couple of treatments then back to the Captain.

They can be beaten but it takes some work.

Glove up, put on long sleeves and soak that plant to the bone. You gotta cover every square millimeter of it with the spray. You want it dripping wet.

Don’t do it under direct lights and should be done before lights out, whether indoors or out.

You can get CJDB ready to use or cheaper in a mix ur own concentrate.


Thank you for the advice.

I ordered CJDB, arriving tomorrow. I took each plant out of the room - pruned any leaves that were damaged and soaked them with Neem Oil (since I had some). I will take them out again tomorrow and soak them again with the CJDB and go from there.


Cool - the CJDB will act as the second to the neem oil. I think Neem works for mites…
Good call on the defol!

Don’t use Neem in flower, but before then you’re fine.


COPY/PASTE the below list into your forum post.

Answer these simple questions the best you can.
If you do not know, or do not use something; Just say so; Or post
NA (non applicable)

-What strain, Seed bank, or bag seed (photo or auto)
-Age of plant
-Method: Soil w/salt, Organic soil, Hydroponics, Aquaponics, KNF
-Vessels: Type and capacity of container (fabric, plastic, etc)
-PH and TDS of Water, Solution, runoff (if Applicable)
-PPM/TDS or EC of nutrient solution if applicable
-Method used to measure PH and TDS
-Indoor or Outdoor if indoor, size of grow space
-Light system List brand and wattage/spectrum
-Actual wattage draw of lights
-Current Light Schedule
-Temps; Day, Night
-Humidity; Day, Night
-Ventilation system; Yes, No, Size
-AC, Humidifier, De-humidifier,
-Co2; Yes, No

If growing Hydro some additional questions:

-DWC? RDWC? Autopots? Ebb and Flow? Other?
-Distance of liquid below net pot (DWC)
-Temperature of reservoir
-TDS of nutrient solution
-Amount of air to solution

Always try to upload a clear picture in white or natural light. From that 1st pic you may also have a cal-mag problem. Fox Farm is low in Cal-Mag

Yes to the pest on one issue. Have you checked all the nutes? Could it be low on not only cal but could it be low in all 3 if the NPK? Kinda looks like low on phor and potassium?

Resembles Thrips

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@KBishopp The best thing I’ve ever seen for spider mites is lady bugs the neem oil work for the live one’s but doesn’t kill egg’s the lady bug’s will eat both

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I hope it’s not Thrips, I’ve gone to battle and it’s a tough one. A mag glass will help you get a better pic. They’ll be in several different growth stages and inmature ones will look different than mature ones. I’m a huge fan of lady bugs

Mature thrips.

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@OGIncognito me too they will eat everything in sight

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It wasn’t those. It is Spider Mites for sure.


Yep, had to swallow my pride and tossed a full run to sanitize the rest of the garage grows :love_you_gesture:

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Don’t know if that’s a good thing but good luck with the eradication🤟

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