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Need help with identifying damage done to new growth.


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#1 TheObserver

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Posted 03 July 2021 - 09:12 PM

Something has been eating the new growth and buds it seems like to me. It is mainly on new growth and the budsites I thought maybe slugs or snails but I don't see any trails. I switched these over to flower a couple weeks ago from t5 to 600watt LEDs. Have them in fox farm ocean forest and only watered straight RO water. There was significantly more damage today when I went in there. I'm posting a few pictures. I'm going to look at them in the dark to see if anything comes out. I read that snails and slugs come out at night. I'm going to lose two otherwise healthy plants if I can't get this resolved. Hope someone has some ideas. TIA1095b9a13f61d2c3c4f6f48a5c23badc.jpg10d465a632b913460bd24f53d56ce929.jpg0e63a2e4132e1fbcb464c8cb19c804c9.jpg

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#2 TheObserver

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Posted 03 July 2021 - 09:37 PM

Its not just new growth but fan leaves are affected as well. Looks like something is eating from the vein outwards and up the leaf.

#3 TheObserver

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Posted 03 July 2021 - 10:32 PM

Light burn possibly?

#4 coorsmikey

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Posted 04 July 2021 - 01:11 PM

Looks like you have a caterpillar. I would bet its green one too, that matches the plant and blends in well. If you have one of those UV inspection flashlights you can sometime spot them at night with it.


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#5 TheObserver

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Posted 04 July 2021 - 03:14 PM

Thanks Coorsmikey, I looked and looked and looked couldn't find one on the plant but I will take a closer look today after work.

#6 joeya

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Posted 05 July 2021 - 12:42 PM

+1 for catterpillar or tomato cutworm. Good luck finding that sucker!



#7 Ringo

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Posted 05 July 2021 - 12:52 PM

Again +1 for caterpillars. Look on the plants just before lights on. Use a flashlight. They are nocturnal.

 

Look for little black balls. That's their poop. Look under the leaves.

 

Catch a Goldfinch and put it in your grow room. That bird will find it ASAP. LOL j/k

 

Never seen a caterpillar on an inside grow. They are nasty for outdoor growers but it's the one pest I have never had.

 

Good luck


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#8 YoshiTrainer

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Posted 05 July 2021 - 12:59 PM

BT organic spray if you need to, just spray in the evening.
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#9 TheObserver

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Posted 06 July 2021 - 07:53 PM

I am totally baffled by what this is. Whatever it is is only eating between the veins. I thought a caterpillar eats the entire leaf. Some leaves it starts at the base of the leaf and works its way upward. On the fan leaf in the picture it almost reminds me of a leaf miner bc it looks like it's getting devoured from the inside of the leaf. I took them outside to just grow them outdoors if they survive. I put some diatomaceous earth around the top of the soil so whatever is eating will get a mouthful or walk through it. f77ccf7a133f75458885cf268d45b3ab.jpgbe538f369ec8b401d693f4a95f161f05.jpg97e9fcda139d8f23457b0e3833267428.jpg

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#10 TheObserver

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Posted 06 July 2021 - 08:25 PM

I'm guessing slugs or snails maybe. I ordered a UV flashlight so I could see them at night if there are caterpillars. I guess its not entirely in-between the veins of the leaf. Its still a mystery.

Edited by TheObserver, 06 July 2021 - 08:26 PM.

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#11 joeya

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Posted 06 July 2021 - 09:00 PM

Good luck, keep us posted. 

I did have one trail of a leaf miner, but it seems they don't like cannabis much. I hope you nail the sucker!



#12 Chips101

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Posted 07 July 2021 - 07:25 AM

Do you have a cat by any chance? It looks similar anyway. The leaves stick to thier tongues and instead of chewing them off they end up ...... Well , like that! If not try neem oil

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#13 TheObserver

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Posted 03 August 2021 - 08:45 PM

I think it was a caterpillar or grasshopper. I do have two cats outside but they don't bother them. I put diatomaceous earth on the soil and on the plants leaves itself. Found a dried out dead caterpillar on the edge of the smart pot so I'm thinking that was the culprit.

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