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What is this on my banana tree?

Colin1110082

By Colin1110082
in TROPICAL LOOKING PLANTS - Other Than Palms

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Colin1110082 Rising Star

Colin1110082

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Hello, I’ve noticed some black spots on my musa Basjoo. Wasn’t sure what to do, so I just hit it with a copper fungicide hoping that will solve the issue if it’s a fungus. There are more on older leaves than new.IMG_1967.thumb.jpeg.335bdaa92db694487434849d83e26f9c.jpeg

Colin1110082 Rising Star

Colin1110082

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57 minutes ago, SeanK said:

How cold has it gotten overnight?

The spots have been happening for a few weeks. I don’t think it’s cold damage. Maybe in early September it started but the nightly lows around there were in the 60s still maybe 50s here and there

SeanK Grand Master

SeanK

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10 hours ago, Colin1110082 said:

The spots have been happening for a few weeks. I don’t think it’s cold damage. Maybe in early September it started but the nightly lows around there were in the 60s still maybe 50s here and there

May be nutritional or may be cooler weather is affecting the plant's metabolism.

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