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Do I have to worry?

Mancha
Manchastarted grow question 3y ago
Only on one leaf of one plant. Is this some fungus or virus? It looks a bit like coffee rust, but I couldn't find anything else like it. How should I proceed? Thanks in advance!
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Week 9
Leaves. Color - Dark-brown
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GrowingGrannie
GrowingGrannieanswered grow question 3y ago
Pretty certain this is Leaf Spot Fungus otherwise known as Rust Fungus... and you'll need to jump on this quickly as it spreads fast... it spreads by spores that you can't even see so don't think you've got any time to waste here... I won't go into all the details of what you need to do as this article is very thorough.. Do give it a read and get going so you don't lose your entire grow... https://www.urbanorganicyield.com/rust-spots-on-leaves-during-flowering/ Good luck!
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Brewer1112
Brewer1112answered grow question 3y ago
I would just keep an eye on it. If it spreads then you probably have a deficiency. Also pay attention to where it start. New leave is usually a mobile nutrients, the old bottom one it not.
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Youthman
Youthmananswered grow question 3y ago
Probably Is simply burned from water (lens effect) i dont think Is a fungus
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Anonymous_2022
Anonymous_2022answered grow question 3y ago
Hi there I will just remove the leaf keep a close eye on it and make sure no more pop up… seeing as your at week 9 flower the end os so close i would just cruise on Best of luck 🌱
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