Cactus turning yellow: please help! - Knowledgebase Question

North Carolina
Question by kwl11
September 5, 2017
Hi hi! I have a small cactus (about 4cm tall) that isn't doing so well and I'm having difficultly figuring out what's wrong. My sisters gave it to me as a gift. It's been doing well for the past two years, up until this summer when it started turning yellow from the base. I thought it might be rot, so I took it out of the pot (also pictured) but it isn't as squishy/smelly as expected and the soil was dry. My previous cactus died of rot/overwatering, so I've been really careful with this one, only watering it once every two weeks and making sure the pot has a drainage hole. I have another cactus the same size in a pot without a drainage hole; I water both cacti on the same schedule and the other one looks fine.

I also considered sunburn, but putting it in a shadier location didn't seem to help. I've also wondered if it's just general stress (I'm a university student so I had to take it home for the summer and bring it back to school).

So I'd like to know 1) what the problem might be and 2) if there's a way to save him. Any help would be much much appreciated!!
Thumb of 2017-09-06/visitor/df2dc3

Name: Philip Becker
Fresno California (Zone 8a)
Image
A comment from Philipwonel
September 6, 2017
I belive its just barking.
Get some catus fertilizer, it will help them stay healthy and promote blooming.
PS : get other into pot with drainage holes. Its living on borrowed time. Salts need to be flushed out, also one overwatering, is a death sentence !😭!!!
😎😎😎

North Carolina
A comment from kwl11
September 6, 2017
Thank you so much!! Is there anything I should do before repotting it to flush out salts?
Also, can corking be prevented?

Name: Philip Becker
Fresno California (Zone 8a)
Image
A comment from Philipwonel
September 6, 2017
Corking , should be called , barking. Its sort of making bark. Its perfectly natural.
Just repot her, as is and wait at least a week, before watering.
To rince salt out, give them a good watering, 2 times a year, so a good amount of water runs out the bottom. Then, you may want to wait an extra week before watering again.
Its not an emergency.

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