I Browsed Reddit For These Common Cactus Problems (Why & Solutions)

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The cactus is a sturdy plant native to dry deserts. Many people have started to keep them in their homes because they look unique and are easy to care for. However, even cacti can face issues despite their challenging nature. With the support of realistic Reddit threads, this post will focus on detecting common cactus problems and solving them.

Why Is My Cactus Squishy?

Commonly, squishy cacti are caused by several reasons, including overwatering/ underwatering, frost damage, infections, pest damage, and sunburn. To especially detect the issue, we need to look into each situation separately. Here are a few threads when I stumbled upon Reddit about squishy cacti:

Why Is My Cactus Falling Over?

The main reasons for cacti falling over are:

  • Root damage: The damage by disease, pests, overwatering, or physical impact makes it too weak to handle the top part.
  • Etiolation: I personally think this is the most common cause of cacti falling over. The top of a cactus grows in a strange manner, which can probably pull it down.
  • Rapid Growth: Some cacti growing too quickly may become too heavy for their base to support.
  • Shallow Root System: A cactus with a shallow root system may not have the anchorage needed to support its weight.

Here are a few interesting cases I found on Reddit that may help you better visualize some real-life circumstances:

Why Is My Cactus Turning Black?

A cactus turning black typically indicates stress or damage. Here are the main reasons your cactus might be turning black:

  • Sunburn: Sudden exposure to direct sunlight can cause sunburn, leading to black or brown spots.
  • Freeze Damage: Exposure to freezing temperatures can cause cells to burst, leading to blackened areas when they thaw.
  • Overwatering: This is a frequent problem. Overwatered cacti can develop root rot, manifesting as blackening starting from the base or the roots.
  • Fungal or Bacterial Infections: Pathogens can cause dark, rotted areas.

Below, I found a few cases, where the cactus turned black on its top and stem.

Why Is My Cactus Turning Brown?

If your cactus is turning brown, it could be due to sunburn from sudden exposure to direct sunlight, overwatering leading to root rot, cold damage from freezing temperatures, diseases like fungal infections, pest damage from bugs like mealybugs, or simply natural aging of the plant. Here are a few cases on Reddit:

Why Is My Cactus Turning White?

If your cactus is turning white, it could be due to sudden exposure to intense light, powdery mildew caused by high humidity and poor air circulation, or a buildup of minerals or salts from tap water in the soil. Some cases with my comments below:

To address this, gradually introduce the cactus to sunlight, improve air circulation, treat it with appropriate fungicides or insecticides, and flush the soil with distilled water to remove excess minerals. Regular checks and prompt care will help maintain your cactus’s health.

Why Is My Cactus Turning Yellow?

Cacti turning yellow is a common thing as succulents turning yellow. If your cactus turns yellow, it might be experiencing stress or health issues. Overwatering is a common culprit, leading to root rot, which manifests as a yellowing of the cactus. Similarly, under-watering can cause the plant to become dehydrated and yellow. Prolonged exposure to intense sunlight can also lead to sunburn, giving the cactus a yellowish tint. Additionally, pests or diseases, such as fungal infections, can cause yellow discoloration. Monitoring your cactus’s water needs, ensuring proper lighting, and checking for signs of pests or diseases are crucial for its well-being.

See the cases and my comments below:

A Few Final Words

The challenges cactus enthusiasts face are evident from the Reddit threads we’ve explored. These discussions highlight common problems like pests and watering woes, uniting a diverse community in shared learning. We can ensure our cacti survive and thrive by embracing this collective wisdom. 

Are there any other cactus problems that I didn’t mention? Let me know in the comment section, or send me an email! Don’t leave now! Here are more suitable reads for you on SucculentCity:

Succulent City chief editor


Succulent City

Hey everyone! Welcome to Succulent City! We are all about succulents, cacti, and a bit about air plants. Ten years back, in 2013, we began the journey with succulents. It started as a simple hobby, crafting and selling charming succulent-themed pins and decorations. But as time passed, our fascination with these remarkable plants grew, and we gained extensive knowledge about them. Therefore, Succulent City is the blog as you see it is now. Enjoy your visit and happly planting!

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