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Q.Is This Fungus On My Pineapple Plant?

meriil added on June 7, 2024 | Answered

Hi, Are these dark, brownish spots on my pineapple plant caused by fungus? The spots are mostly on the bottom part of the leaves, and its short trunk. or could it be sunburnt? Which do you think is the case? And if it is fungus, do I have to get rid of the trunk? I guess that would kill the poor plant :(((( Thank you.

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Certified GKH Gardening Expert
Answered on June 10, 2024

This does look like infection. Whether it is bacterial or fungal would likely require testing or a microscope. Your local extension service can help you with testing.


The cause of this is mostly from stress of overwatering which invites the bacteria/fungi into the suffocating root system. If this has been the case, then fungicides and azadirachtan from neem oil can function as an antifungal agent. You will want to keep all dead debris away from the plant. This will prevent further infection, and cut down on what is already infected. If you can't control watering, or the soil is thick, then proactive organic fungicides may help mitigate these symptoms. Earthworms can help aerate the soil.




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