Black spot on cereus peruvianus

Trouble shoot problems you are having with your cactus.
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Potosi
Posts: 4
Joined: Thu Aug 25, 2022 6:20 pm

Black spot on cereus peruvianus

Post by Potosi »

Hi.

This cactus has a american quarter sized black spot.

Is it possible to cure or should I cut the spot.

It is a one metre tall cereus peruvianus monstruosa.

Any help will be appreciated.
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Pd1973
Posts: 51
Joined: Mon Aug 06, 2018 7:29 am
Location: Rijeka, Croatia, EU - zone 9a

Re: Black spot on cereus peruvianus

Post by Pd1973 »

It is a consequence of stress. Probably caused by high temperatures. I have noticed this on several of my Trichoseurusa pachanoi. Watch the video from Desert plant of Avalon: https://www.youtube.com/watch?v=deCzO0q9aNg
Unfortunately, there will be a hole left when the cactus heals.
Potosi
Posts: 4
Joined: Thu Aug 25, 2022 6:20 pm

Re: Black spot on cereus peruvianus

Post by Potosi »

Thanks for the response and link.
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