Bathroom Plants: The Best Picks for Humid, Low Light
Bathroom plants that like humidity and cope with low light, plus what to grow with no window, which plants help with damp, and which are safe for cats.
On this page
- Bathroom plants at a glance
- Best bathroom plants with a window
- Bathroom plants for low light and no light
- How to choose: a quick decision guide
- Do bathroom plants absorb moisture or help with mould?
- Bathroom plants safe for cats
- Caring for plants in a bathroom
- Common bathroom plant problems
- Sources and further reading
The best bathroom plants are those that enjoy humidity and tolerate the moderate or low light most bathrooms have: Boston fern, bird's nest fern, pothos, peace lily, spider plant and calathea for bathrooms with a window, and pothos, ZZ plant or snake plant for dimmer ones. If your bathroom has no window at all, no plant will thrive there without a grow light.
Bathrooms look ideal for plants, with steam, warmth and tiled surfaces that don't mind a drip. The limiting factor is almost always light, not humidity.
Bathroom plants at a glance
| Plant | Light | Likes humidity? | Water | Pets (ASPCA) |
|---|---|---|---|---|
| Boston fern | Medium | Yes, a lot | Keep moist | Non-toxic |
| Bird's nest fern | Low to medium | Yes | Keep lightly moist | Non-toxic |
| Pothos | Low to bright | Tolerates | Top few cm dry | Toxic |
| Peace lily | Low to medium | Yes | Keep lightly moist | Toxic |
| Spider plant | Medium to bright | Tolerates | Top few cm dry | Non-toxic |
| Calathea / prayer plant | Medium | Yes | Keep lightly moist | Non-toxic |
| Snake plant | Low to bright | Tolerates | Let dry fully | Toxic |
| ZZ plant | Low to medium | Tolerates | Let dry fully | Toxic |
| Parlor palm | Low to medium | Yes | Keep lightly moist | Non-toxic |
| Air plants (Tillandsia) | Medium to bright | Yes | Soak or mist | Generally listed non-toxic |
| Staghorn fern | Medium | Yes | Soak when dry | Non-toxic |
Best bathroom plants with a window
A bathroom with a window, even frosted glass, is one of the best places for humidity-loving plants. Frosted glass diffuses light, so you can often put plants right on the sill without scorching them.
Ferns
Ferns are the classic bathroom plant. Boston ferns drop leaflets in dry living rooms but stay lush in a steamy bathroom. Bird's nest ferns have glossy, wavy fronds and tolerate lower light. Water into the soil around the edge rather than into the central "nest", which can rot.
Calatheas and prayer plants
These patterned plants often get crispy brown edges in dry rooms. Humidity helps. They're fussy about water, so keep the soil lightly moist but never soggy, and use rainwater or filtered water if your tap water is hard.
Peace lily
Peace lilies like humidity and warmth, and they tell you when they're thirsty by drooping dramatically. Our peace lily care guide covers brown tips, a frequent issue that humidity can reduce.
Spider plant
Spider plants are tough, non-toxic to cats and dogs, and look great hanging. In a bright bathroom, they'll produce plenty of baby plantlets. See the spider plant care guide.
Bathroom plants for low light and no light
Low light (small or obscured window)
If your bathroom has a small north-facing or heavily obscured window, choose pothos, ZZ plant, snake plant, bird's nest fern or cast iron plant. They'll grow slowly but steadily. Use the low-light plant finder to see the full list for your light level.
No window at all
This is where most "bathroom plants that don't need sunlight" articles mislead. All green plants need light. In a windowless bathroom, the light is on perhaps an hour a day, so even a ZZ plant will slowly use up its reserves.
You have three workable options:
- Add a small grow light on a timer. A plug-in LED grow light on a 10–12 hour timer lets a fern or pothos grow normally. Choose one rated for damp locations, and keep it well away from water. See our guide to grow lights for houseplants.
- Rotate plants. Keep two pothos or snake plants and swap them between the bathroom and a bright room every week or two.
- Use cuttings in water. A jar of pothos cuttings on a shelf lasts a surprisingly long time and costs nothing to replace.
The very low light plants guide explains how dark is too dark, with lux and foot-candle figures.
How to choose: a quick decision guide
Answer three questions and the shortlist almost picks itself:
- Is there a window? If not, plan for a grow light or plant rotation before buying anything. If there is, note which way it faces and whether anything outside blocks it.
- Do you have pets? If a cat or dog uses the bathroom, rule out pothos, peace lily, snake plant and ZZ plant, and choose from the ferns, spider plant, parlor palm and calatheas.
- How much attention will you give it? Ferns and calatheas reward regular checking. ZZ and snake plants suit people who forget plants for weeks.
| Your bathroom | Pick |
|---|---|
| Bright window, no pets, little time | Snake plant or pothos |
| Bright window, cat at home | Spider plant or Boston fern |
| Small frosted window, cat at home | Bird's nest fern or parlor palm |
| Small window, no pets, beginner | Pothos or ZZ plant |
| No window | Any of the above plus a grow light on a timer |
Do bathroom plants absorb moisture or help with mould?
This comes up a lot ("bathroom plants that absorb moisture", "plants for mould"). Plants don't dry out a room in any meaningful way. They take water up through their roots and release most of it through their leaves (transpiration), which adds humidity rather than removing it.
Some plants, such as air plants and ferns, absorb water through their leaves or fronds, but the amount is tiny compared with a hot shower. Control damp and mould with an extractor fan, an open window after showering, and by wiping down surfaces. Plants are for enjoyment, not dehumidifying.
A related myth is that houseplants clean indoor air. Plants do absorb some chemicals in sealed lab chambers, but research since has found that in a real home with normal ventilation, you would need an impractical number of plants to make a measurable difference.
Bathroom plants safe for cats
If your cat drinks from the tap or sleeps in the bath, choose plants on the ASPCA's non-toxic list:
- Boston fern and bird's nest fern
- Spider plant
- Parlor palm
- Calatheas and prayer plants
- Most air plants (Tillandsia)
Avoid pothos, peace lily, snake plant and ZZ plant, which are listed as toxic. Our low light plants safe for cats guide has a fuller list.
Caring for plants in a bathroom
Watering
High humidity slows water loss, so soil often stays damp longer. Don't water on a fixed day. Feel the soil first. The watering schedule builder gives a starting point. A Boston fern in medium light and a 15 cm pot in the growing season comes out at a check every 4 days, but in a humid bathroom you may find it can go a little longer.
Temperature swings
Bathrooms get hot during showers and cold at night, especially near windows in winter. Most tropical houseplants dislike temperatures below about 10–13 °C. Keep plants off cold windowsills on winter nights.
Soil and pots
Use pots with drainage holes, even in a bathroom. Ferns and calatheas like a moisture-holding mix with coir. Snake plants and ZZ plants need a fast-draining mix. The soil mix calculator has recipes for both, and our houseplant soil mix guide explains when to use which.
Placement ideas
| Spot | Good choices |
|---|---|
| Windowsill (frosted) | Calathea, spider plant, small fern, air plants |
| Hanging from the ceiling | Pothos, Boston fern, spider plant |
| Top of the cistern or shelf | Bird's nest fern, small snake plant, ZZ plant |
| Floor corner | Parlor palm, peace lily, tall snake plant |
| Inside the shower (bright only) | Air plants, staghorn fern on a mount |
Be careful with plants inside the shower. Hot water, shampoo and soap residue can harm leaves. Only try it if the shower gets good natural light.
Common bathroom plant problems
- Yellowing and mushy stems: soil staying too wet. Water less and check drainage.
- Leggy growth: not enough light. Move closer to the window or add a grow light.
- Mould on the soil surface: usually harmless white fungus from wet soil and poor air flow. Scrape it off and let the top layer dry.
- Brown leaf tips on peace lilies and calatheas: often from hard water or uneven watering, not humidity.
Sources and further reading
- ASPCA Toxic and Non-Toxic Plants list.
- Royal Horticultural Society, for fern and houseplant care.
- NC State Extension Gardener Plant Toolbox, for species light and moisture needs.
Frequently asked questions
What is the best plant for a bathroom?
For a bathroom with a window, Boston fern, bird's nest fern, pothos, peace lily and spider plant all do well because they like or tolerate humidity. For a dim bathroom, pothos, ZZ plant and snake plant are the toughest choices.
Can plants live in a bathroom with no window?
Only with artificial light. The bathroom light is usually off most of the day, so even low-light plants slowly decline. A small LED grow light on a timer, or rotating the plant to a brighter room every week or two, keeps it going.
Do bathroom plants absorb moisture and stop mould?
Plants take up water through their roots and release most of it back into the air through their leaves, so they don't dry a room out. Good ventilation, an extractor fan and wiping surfaces are what control damp and mould.
Which bathroom plants are safe for cats?
Boston fern, bird's nest fern, spider plant, parlor palm and prayer plants are listed as non-toxic to cats by the ASPCA. Pothos, peace lily, snake plant and ZZ plant are listed as toxic.
Do bathroom plants need watering less often?
Often, yes. High humidity slows how fast plants lose water through their leaves, so soil can stay damp longer than in other rooms. Check the soil before watering rather than following a fixed schedule.