Not Looking Good

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Hello,

I noticed my cactus browning. It looks like it’s rotting. Please see picture below. Is it something serious? What should I do?

A tall green cactus with dark brown and discolored patches on its stem stands in a pot on a balcony, clearly not looking good, with another cactus, outdoor greenery, and a chair nearby. A tall green cactus with brown scarring and discoloration on its stem stands in a pot filled with pebbles near a window. Sunlight shines across the cactus, highlighting its not looking good condition, while another fuzzy cactus is visible in the background.

Thanks,
Sophiya

It’s hard for me to know what happened, but it looks like it might be a virus. Whatever it is, it has encircled the cactus which means it is not going to survive. Sorry about that.
Peter
    
    
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June 2026
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