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I’ve noticed that my cactus has started turning yellow over the last week. It’s kept indoors near a window with bright light. I water it once every 10–12 days. The pot has a drainage hole, and the soil is a normal garden mix. There are no visible pests, but the base looks a bit soft.
Can someone help me figure out whether it’s overwatering, lack of sunlight, or something else?
1. Repot immediately
Use cactus/succulent soil or mix:
50% cactus mix + 30% perlite/pumice +20% coarse sand.
Remove the cactus and check the roots.
Trim off any black, mushy, or foul-smelling roots.
2. Let the plant dry
After trimming, let the cactus sit in open air for 24 hours so the cuts can callus.
3. Replant in a smaller pot with drainage
Don’t water right after repotting.
4. First watering after repotting
Water after 5–7 days. Then shift to watering every 12–18 days indoors.
5. Increase the light
Move it closer to a bright window or give 2–3 hours of direct sun if possible.
How to know it’s recovering
* Yellowing stops spreading.
* New growth at the top looks green.
* Base becomes firm again over time.
Hello ,
Anubhav
Greeting From Tiny Cactii !
Thank you for taking the time to share such a clear and helpful response. The steps you outlined are accurate and genuinely valuable for anyone dealing with early signs of rot in their cactus. We appreciate your effort in contributing to the community and supporting other plant enthusiasts. Your guidance adds real value to the discussion.
Regards!
Anubhav Duarah [ CEO & Founder ]
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