Fairy Castle Cactus
Q.

Cactus question

Zone 32940 | Jeannie Cox added on March 27, 2017 | Answered

Fairy castle cactus - I have one that is about 10 years old, big, and it keeps getting black spots on it that I can't figure out how to get rid of. Any idea what is going on? It seems to have room for growth in the pot, and I not sure based on its size if I could find a bigger pot, much less get it in one.

A.
A.Answers to this queston: Add Answer
Alisma
Certified GKH Gardening Expert
Answered on March 27, 2017

If your cactus appears to have room for growth in its pot, it's best to keep it there for now. Here is more information on when to repot your cactus:
https://www.gardeningknowhow.com/ornamental/cacti-succulents/scgen/cactus-repotting-info.htm

Check whether the black spots feel soft and mushy or sunken. This indicates there might be a rot problem, which can be caused by overwatering. Here is more information:
https://www.gardeningknowhow.com/ornamental/cacti-succulents/scgen/cactus-going-soft.htm

Or, it could be a fungal disease, like those seen in the fungi section of this page:
https://cactiguide.com/cactipests/

00
Was this answer useful?

Log in or sign up to help answer this question.
Did you find this helpful? Share it with your friends!

You must be logged into your account to answer a question.

If you don't have an account sign up for an account now.

Looking for more?
here are more questions about...
Fairy Castle Cactus
Join Us - Sign up to get all the latest gardening tips!

Do you know a lot about gardening?
Become a GKH Gardening Expert

Learn More