--- title: "Help! First time posting here and also first time seeing this happen…" description: "Help! First time posting here and also first time seeing this happen to my plants. All my plant types have seemingly gotten sick with a fungus? Maybe? I’m…" url: "https://getplanta.com/community/lKxUkhzRR_aIJD7o1QvtwQ/mdH4Wh6r3L4LShevY59XXr?language=da" community: "Pests, diseases and problems" author: "Ian" published: "2025-07-02T00:10:34.497183Z" language: "en" image: "https://images.getplanta.com/v1/resize/C2vMMEU6SUewnozyP4BkCQkqclmzJufn3h6hepogs7E/n-oWF4OyRICNp5F46LOabQ.webp?size=large" --- [Fællesskab](https://getplanta.com/community.md?language=da) / [Pests, diseases and problems](https://getplanta.com/community/lKxUkhzRR_aIJD7o1QvtwQ.md?language=da) # Help! First time posting here and also first time seeing this happen… _Opslået af Ian den 2025-07-02_ Help! First time posting here and also first time seeing this happen to my plants. All my plant types have seemingly gotten sick with a fungus? Maybe? I’m curious if yall have seen anything like this before, and how you managed to treat it (currently I’m soaking the roots in Hydrogen peroxide mixture, spraying the leaves with Dr. earth fungicide, and repotting them after I have rinsed and washed their pots)?? Anything else I need to be doing? Also how do I prevent something like this happening again? It feels like a full blown infestation. I have so many plants now that I started watering them outside. Is that where they could pick up fungal spores and thus spiral into infecting every plant? ![Vedhæftet fil 1 af 4](https://images.getplanta.com/v1/resize/C2vMMEU6SUewnozyP4BkCQkqclmzJufn3h6hepogs7E/n-oWF4OyRICNp5F46LOabQ.webp?size=large) ![Vedhæftet fil 2 af 4](https://images.getplanta.com/v1/resize/C2vMMEU6SUewnozyP4BkCQkqclmzJufn3h6hepogs7E/bcH8aZpwQe2y3sF2xLbthQ.webp?size=large) ![Vedhæftet fil 3 af 4](https://images.getplanta.com/v1/resize/C2vMMEU6SUewnozyP4BkCQkqclmzJufn3h6hepogs7E/dwPA3M9nRIuEvutYuPHf6Q.webp?size=large) ![Vedhæftet fil 4 af 4](https://images.getplanta.com/v1/resize/C2vMMEU6SUewnozyP4BkCQkqclmzJufn3h6hepogs7E/7oclTyGjSYyUnRNsbJ3nBQ.webp?size=large) ## 10 kommentarer ### Nunyabzwx kommenterede den 2025-07-02 Oh noooo!!! I have 2 plants that have that on them and i can't figure out what it is. I've heard it can be a watering issue as wel as a fungus issue. But i think your doing the right thing with the hydrogen peroxide. I don't know what else to do sorry. Hopefully someone can figure it out for us.. ### Tam kommenterede den 2025-07-02 Hmmmm if it’s multiple plants affected like that I would definitely check the undersides of the leaves for any thrips. Hoping for you it’s not that though! #### Ian svarede den 2025-07-02 I’ll check it out more closely. Wouldn’t thrips be associated with little black dots though? #### Tam svarede den 2025-07-02 Thrip damage can definitely look like this where the leaves turn brown. You should be able to see teeny tiny bugs on the undersides of the leaves if you have them. But then some of the leaves look more like either cold or heat damage so it’s hard to say.. #### Ian svarede den 2025-07-02 Just checked, no bugs on the plants. #### Tam svarede den 2025-07-03 Great! ### Lil Monstra kommenterede den 2025-07-02 If it’s a watering issue ? Which is it are we watering too much or too little?I have the same problem on one leaf. #### Ian svarede den 2025-07-02 Yea I don’t know? I never had problems until I started this watering outside and bring them back inside routine. I still follow the same watering schedule I can’t imagine their demands have changed that much? #### Tam svarede den 2025-07-03 Hmmm it’s tricky.. where abouts in the world are you? Has it been cold when you take the plants outside to water? I think you might have to inspect the roots on all of them to rule out a watering issue or rot. With the arrowhead plant I would say it definitely looks like there could be some rot, but in my experience these bounce back fairly well. But then with the monstera it almost looks like cold damage or a burn? #### AlyssaMonkey svarede den 2025-07-03 Yea if it’s super sunny outside during watering could definitely be a burn. Are you getting leaves wet when watering now? Makes sunburn easier. What time of day and temp is sit when you water? Using a hose instead of watering can? Maybe you’re giving a lot more water than normal and not noticing? --- _Planta-fællesskabet (https://getplanta.com). Alle kan læse med. For at slå op, kommentere og like, hent Planta-appen: https://getplanta.com/download_