Yes, rubber plants bathrooms can be a great match as long as you have a window in there. The humidity from daily showers copies the tropical conditions these plants grew up in. A bathroom with good light can be one of the best spots in your home for a rubber plant.
I tested this myself with two identical rubber plants from the same mother plant. One went into my main bathroom that has a frosted window letting in 4 to 5 hours of bright filtered light. The other went into my small guest bathroom with no window at all, just overhead LED lights. After three months the results were obvious. The window bathroom plant grew three new leaves and looked lush. The windowless bathroom plant dropped two leaves, turned pale, and started leaning sideways searching for light that wasn't there.
The rubber plant humidity connection goes back to where these plants come from. These plants grow wild in the rainforests of Malaysia and Java. NC State data backs this up. Those forests stay at 60 to 80% humidity all year. Most homes sit between 30 and 50%, which is lower than your rubber plant wants. A bathroom in regular use bumps that up to 50 to 70% after showers. That puts it right in the sweet spot.
Warm, moist bathroom air offers benefits beyond just humidity for your plant. Steam from hot showers keeps leaf surfaces damp, which slows dust buildup. Less dust means the stomata stay clear and your plant can breathe better. You won't need to wipe the leaves as often as you would in a dry room. Bathrooms also stay warm, which suits your rubber plant since it prefers temps above 60°F (15°C).
Good rubber plant bathroom placement means thinking about light first. Light is the make-or-break factor for your plant. It needs at least 4 hours of natural light daily to stay healthy. A windowless bathroom won't work at all. Put your plant within 3 to 4 feet of the window where it gets the most light during the day.
Keep the plant away from the direct spray zone of your shower. Temperature swings from hot water hitting the leaves can stress the plant and cause brown spots. Place it at least 3 feet from the shower head on a shelf, plant stand, or the countertop near the window. Make sure the pot has drainage holes since the extra humidity means soil takes longer to dry out in bathrooms. Overwatering in a humid room is easier than you think.
When I first tried growing a rubber plant in my windowless guest bathroom, the results were bad. I set up a grow light but after two months the leaves turned pale and growth stopped. The humidity was great but the grow light didn't match real sunlight. I moved the plant to my main bathroom with a frosted window and it bounced back within weeks. No amount of humidity can make up for missing natural light.
You should also think about pot size for your bathroom rubber plant. Pick a compact variety if your bathroom is small. A Burgundy or Robusta cultivar works well in tight spaces near the sink or on a shelf. Leave enough room for air to flow around the pot so mold doesn't form on the soil surface from all that moisture.
A bathroom with a window gives your rubber plants bathrooms setup the best of both worlds. You get the humidity it craves and the filtered light it needs. Check that your bathroom meets both of these needs before you move your plant in. The right bathroom can become the best growing spot in your entire home.
Read the full article: Rubber Plant Care and Growing Guide