Okay, so I’ve been messing around with cacti for a while now, and I’ve always wondered just how cold they can actually get before they, you know, kick the bucket. So, I decided to do a little experiment of my own.
Getting Started
First, I gathered a few different types of cacti. I figured not all cacti are created equal, right? Some might be tougher than others. I made sure to get some small ones, because, well, I didn’t want to sacrifice any of my big, beautiful specimens if things went south.

- Small Golden Barrel Cactus
- A few Peanut Cacti
- A couple of random cuttings I had.
Next, I needed a way to control the temperature. I don’t have any fancy lab equipment, so I just used my garage. It’s unheated, and in the winter, it gets pretty darn cold in there. I also got a cheap digital thermometer to keep track of the temperature.
The Experiment Begins
I placed the cacti in the garage and started monitoring. The temperature slowly dropped over the next few weeks. It was a pretty mild winter, so the temperature was drop so slow! I watched them closely for any signs of stress – you know, like shriveling, discoloration, or anything that looked “off.”
I kept a little notebook and jotted down the temperature every day, along with any observations about the cacti. I felt like a real scientist, even though it was just a simple setup in my garage.
Observations and Results
Honestly, it was pretty slow going. Most of the cacti seemed pretty chill (pun intended!) even as the temperature dipped down close to freezing. I did notice the Peanut Cacti started to look a little soft and sad when it got below, about, 35°F (that’s around 2°C).
The Golden Barrel, though, that little guy was tough! It handled temperatures down to around 32°F (0°C) without any visible problems. I was actually pretty impressed.
The random cuttings… well, some of them made it, some of them didn’t. It was kind of a mixed bag. I guess that shows you that not all cuttings are as resilient.
What I Learned
From this little experiment, I figured out that most of my cacti can handle temperatures close to freezing, but some are definitely more sensitive than others. I learned that the Peanut Cactus is a bit of a wimp, while the Golden Barrel is a real trooper.

It’s good to know this stuff, especially since I live in a place where we get occasional frosts. Now I know which cacti I need to bring inside or protect when the temperature drops, and which ones can probably handle it.
It will be useful and necessary if I do another more detailed experiment, but for now, the little practice is enough!