---
title: "Help!! I’ve had this deco cactus for a few weeks now and all of a…"
description: "Help!! I’ve had this deco cactus for a few weeks now and all of a sudden it looks like this. It is turning a light green and has these brown spots. It seems…"
url: "https://getplanta.com/community/lZ7uAE3pQ86jnFGxrCwLrg/Itl0mpOC9GruOb57exEutv?language=sv"
community: "Anything about plants 🇺🇸"
author: "Leyla"
published: "2026-02-15T13:42:41.148159Z"
language: "en"
image: "https://images.getplanta.com/v1/resize/OAqfi0ZJLBJBOZF_oqJPwhAUZHYFdns-LBgIkpYPI4U/Q2PdXSvCS96mx-YQJhKA0w.webp?size=large"
---

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# Help!! I’ve had this deco cactus for a few weeks now and all of a…

_Postat av Leyla den 2026-02-15_

Help!! I’ve had this deco cactus for a few weeks now and all of a sudden it looks like this. It is turning a light green and has these brown spots. It seems like this happened overnight! Any ideas???

![Bilaga 1 av 1](https://images.getplanta.com/v1/resize/OAqfi0ZJLBJBOZF_oqJPwhAUZHYFdns-LBgIkpYPI4U/Q2PdXSvCS96mx-YQJhKA0w.webp?size=large)

## 6 kommentarer

### Joss kommenterade den 2026-02-15

That looks like over watering. I would check the roots and see if there is any root rot

### Becky kommenterade den 2026-02-15

Your cactus is definitely stressed, this could be caused by a few different environmental factors.  
Possibilities:  
-Overwatering is a likely cause of issues with cacti, which are sensitive to wet soil. Overwatering is about frequency, not amount, and can lead to root rot.  
-Too much sun, a San Pedro cactus in full, direct sun all day can be harmful, causing the plant to turn yellow, which might explain the light green color.  
-Not enough light can also cause pale color and a stretched appearance, and it increases the chance of other diseases.  
-Fungal infections can cause various spots and can be related to overwatering or poor air circulation.

Recommendations  
-Make ssure the soil dries out completely between waterings. Use a pot with good drainage and well-draining soil, like a 50-50 mix of cactus soil and perlite/pumice.  
-Use a light meter to measure the amount of light the plant is getting. An indoor San Pedro cactus needs 2,000+ lumens per square foot for healthy growth. For optimal, potentially flowering growth, it needs 5,000+ lumens; provide full-spectrum LED grow light for 12–16 hours daily.  
-If the plant feels squishy or soft, especially at the base, it may have root rot. You may need to remove the infected section with a sterilized knife and repot the healthy part.

### Whit\_Y kommenterade den 2026-02-15

This looks like overwatering, what’s your watering schedule been like?

We tend to overwater cacti and overshade them. I would check the roots and remove any signs of rot or squishiness. Let it callus over for a day and then repot into a well draining cactus mix and ideally place outside in full sun.

#### Leyla svarade den 2026-02-15

Roots are actually dry and plant not squishy! I do have it in front of a south facing window pretty close so maybe too much sun? I moved it to indirect light spot

### Whit\_Y kommenterade den 2026-02-15

Yay no squishy! It may just need to acclimate to stronger light. Keep it in the south window and I wouldn’t water until it starts to wrinkle

#### Leyla svarade den 2026-02-15

Ok!! I have faith 🙏🏼 thank you so much!!!

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