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Does anyone know what may be causing the leaves to turn black on my 7 foot bamboo, growing in a huge pot (not pot-bound)?
It is in an enclosed yard and only one side, so far, is affected.

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That looks like Sooty mould. It grows on the droppings of aphids etc. So the first thing to do is check for greenfly and deal with them. then you can wash the mould away with soap and a strong jet of water.

19 Nov, 2020


Thank you so much. I paid a lot for the tree, this year, so don’t want to lose it. I will spray against greenfly as you suggest.
Thank you again.

19 Nov, 2020

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