Can I put a plant in a bathroom with no window?

Bathrooms are naturally humid environments, which can be ideal for tropical houseplants. However, light is essential for photosynthesis, even for humidity-loving plants. Without a source of light, a plant cannot produce energy and will eventually weaken or die.

If your bathroom has no window, it is not a suitable long-term location for most plants. To make it work, you would need to install artificial lighting or grow lights to supply the energy the plant needs. While humidity can enhance growth, it cannot replace light.