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tlg1304

Help, cactus disease/pests?

tlg1304
9 years ago

I have recently bought this cactus from a garden centre and have only just noticed the blemishes on the skin as you can see in the picture. They are raised bumps and on other parts of the cactus they are black, I tried cutting one of the black ones out and it left green fleshy skin underneath. However, when I went back to look at it later on the same spot had turned black again, only it is now indented. What is this? Can it be resolved?

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