Okay, guys, so I’ve been messing around with my Calathea plants lately, specifically trying to figure out their temperature tolerance. It’s been a bit of a journey, so I thought I’d share my experiences with you all.
Getting Started
I started by getting a few Calathea plants. They’re pretty, you know, with those fancy leaves. I placed them in my living room, where it’s usually around 70°F (21°C). Noticed they were doing okay at first, just chilling and looking good.

Experimenting with Temperature
Then, I got curious. What would happen if it got a bit colder or hotter? I moved one plant to a cooler spot in my house, near a window where it’s usually around 60°F (15°C) during the winter. I also set up a little experiment where I used a space heater to warm up another area to about 80°F (27°C) and placed another Calathea there.
Observing the Changes
Here’s where it got interesting. The Calathea in the cooler spot started to look a bit sad. Its leaves began to droop, and they didn’t seem as perky as before. The one in the warmer area, though, it seemed to be thriving! It was like it was having a little tropical vacation.
- Cold Spot (60°F/15°C):
- Leaves drooping
- Plant looked sad
- Warm Spot (80°F/27°C):
- Plant thriving
- Looked very happy
Dealing with Humidity
But it wasn’t just about temperature. I quickly realized these plants are drama queens when it comes to humidity. They love it humid, like 50% or more. My place is usually not that humid, so I got a humidifier and placed it near the plants. They definitely perked up after that. It’s like they were thanking me for the extra moisture.
Avoiding Direct Sunlight
Another thing I learned is that they hate direct sunlight. I initially had one near a south-facing window, and it started getting crispy leaf edges. So, I moved it to a spot with indirect light, and it recovered pretty quickly. They like it bright, but not too bright, you know?
Keeping the Soil Moist
I also made sure to keep the soil consistently moist but not soggy. I watered them whenever the top inch of the soil felt dry. Overwatering is a big no-no, as I found out when one of my plants started getting yellow leaves. It’s a delicate balance, but you get the hang of it.
Final Thoughts
So, after all this trial and error, I’d say Calatheas are happiest in warm, humid environments with indirect light. They’re a bit high-maintenance, but totally worth it for those beautiful leaves. If you keep them in a spot where the temperature is between 65°F and 80°F (18°C to 27°C), with good humidity and no direct sunlight, they’ll be pretty happy campers. Just remember to keep an eye on them and adjust as needed. They’ll definitely let you know if something’s off.
If one of them really takes a turn for the worse, don’t panic, one time I actually cut off all the leaves of one that looked like it was totally gone. I just kept the soil very lightly moist, giving it a tiny bit of water whenever it dried out. And guess what? It grew back! These plants can be surprisingly resilient.

Hope this helps you out if you’re growing Calatheas or thinking about it. They’re a fun challenge, and it’s really rewarding when you get it right!