What's your question? Ask



Zone BN2 9QG | Mona Glassfield added on February 10, 2017 | Answered

I have had this particular cactus for around two years now without any problems. After recently returning from holiday, I noticed some light brown discoloration on one of the stems. I cannot see any darker discoloration near the root, so I suspect it could be temperature damage or sunburn? (I live in the UK which can get below zero during winter.) Has anyone had any similar issues?

Any advice would be appreciated!

A.Answers to this queston: Add Answer
Certified GKH Gardening Expert
Answered on February 13, 2017

Yes, this could be sunburn or potentially mild cold damage. Overwatering can also cause white patches to develop on cacti. In the future, you can protect cacti from intense sun or cold by covering them or providing some shade. If you move one from indoors to outdoors, do it gradually so they have time to adjust to the brighter light.

It looks like the cactus should recover, but if any parts start to appear rotten or mushy, you'll have to cut them out so the rot doesn't spread:

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...
Join Us - Sign up to get all the latest gardening tips!

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