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Posted 1Y ago by @RelevantCooperi

What is it and what do I do 😭

I was afraid I might have overwatered it so I switched out soil. The spot is soft. What is it?? Do I cut the leaf off? #alocasia
0ft to light, indirect
4” pot with drainage
Last watered 1 year ago
@RelevantCooperi when seeking help, tag groups and friends to get more help. I haven’t come across this but maybe it’s a fungus? Was it starting before you changed the soil? How were the roots when you changed the soil? Did you try a hydrogen peroxide soak on the roots? Tag some folks that have more knowledge about this type of thing. I wish I were more helpful. #Alocasia #HappyPlants #PlantsMakePeopleHappy #PlantAddict
@Arid_oasis thank you! Yes I changed the soil because I noticed it on 1 leaf; roots were good and I used peroxide to make sure I wasn't missing any rot. It has now spread to a second leaf. I've been preventatively using a 3-in-1 neem oil insecticide/fungicide/miticide with a couple drops of Dawn to clean leaves and keep pests away.
@RelevantCooperi alocasia are succeptible to fungal infections. I don’t know why, they just are. Overwatering can lead to them, and getting water on their leaves. Do you have more than this leaf on the alocasia? If no, I would trim around that spot and dab cinnamon on the open edge of the leaf. If you have more leaves and the plant won’t suffer by cutting it off, I would. I just learned all this with mine. I shook my hands after washing them about 2-3 weeks ago because one of my kids took the hand towel out of my bathroom. I have a corner tub with 3 alocasias. I had been washing the humidifier so my hands and wrists and part of my forearms were wet. So there was a lot of water to be splashed πŸ˜‚ they all started forming a yellow spot where the water hit them. I sprayed their soil with a fungicide, and the leaves and blotted them dry. It didn’t stop the spread. So one alocasia I trimmed around it and did what I suggested with cinnamon and it stopped the spread. The other I cut the leaf and then dabbed cinnamon in the stalk. They’re both pushing new leaves now.
@RelevantCooperi

Hi Jozlyn,

I can't give you a definitive answer without actually having your plant in hand but from your photos and the description of it being squishy...I would say you have a bacterial, not a fungal problem.
I say this due to that bright yellow halo around the lesions in the photo.

I would definitely avoid going ham on all sorts of treatments on your plant without knowing the root cause, since you risk burning/killing your healthy plant tissue and opening the plant up to more stress. More stress=more issues.