A dark room is rarely pitch black. It is usually low, indirect light, sometimes with no direct window at all. Good news, several houseplants thrive in exactly these conditions, because that is what they meet in the wild, under the canopy of tropical forests.
The seven champions of dim rooms
- ZZ Plant (Zamioculcas zamiifolia): the most tolerant of all.
- Snake plant (Dracaena trifasciata): just as solid in low light as in bright.
- Golden Pothos (Epipremnum aureum): grows anywhere.
- Cast iron plant (Aspidistra elatior): nearly indestructible.
- Peace lily (Spathiphyllum): blooms even without direct sun.
- Calathea: spectacular foliage in faint indirect light.
- Aglaonema: reds and pinks that handle low light.
ZZ Plant, dim-room champion
The ZZ stores reserves in underground rhizomes, which lets it survive weeks without light. A plant in a hallway with no window, lit only by evening lamps, holds up perfectly.
Very spaced waterings (every 3 to 4 weeks), free-draining substrate, and that is all.
Snake plant, the no-brainer
The snake plant works in any room. Windowless bathroom, north bedroom, hallway, this is the one. Its CAM metabolism also lets it produce oxygen at night. Ideal for a bedroom.
Pothos, the all-purpose
Golden Pothos is probably the most tolerant houseplant on the market. It grows even when you forget about it. In a dark room it grows slower with smaller leaves, but stays green and beautiful.
Place it as a hanging plant or trailing from a shelf to enjoy the cascading vines.
Aspidistra, the Victorian survivor
The cast iron plant survived 19th-century waiting rooms. Wide deep-green leaves, elegant posture, completely indifferent to light.
Downside: it grows very slowly. A medium-sized plant costs a lot at the garden center because it is already 5 to 10 years old.
Peace lily, blooms in shade
Almost the only houseplant that flowers in faint indirect light. Elegant white spathes, several times a year if it is happy.
Likes a substrate that stays slightly moist. Tells you it is thirsty by drooping its leaves, which perk up the moment you water. Toxic to cats.
Calathea, foliage beauty
Calatheas need very little direct light and even prefer to avoid it. Their leaves draw spectacular patterns, white, pink, or purple depending on the species.
Fussier than the others: it wants high ambient humidity and regular watering with filtered water. But in a humid dark room (a bathroom for instance), it is in its element.
Aglaonema, color without sun
Aglaonemas come in pink, red, or silver foliage that stays vibrant even in dim light. One of the rare colored plants that does not fade in a room with no direct light.
Tolerates missed waterings, indifferent to ambient humidity. Excellent office plant.
Specific rules for dark rooms
Water less. A plant that gets less light transpires less, so consumes less water. Classic trap: keeping the same watering pace you had in a bright room and drowning the plant.
Skip fertilizer in winter. Photosynthesis slows down, fertilizer burns the roots instead of being absorbed.
Rotate plants a quarter turn each week, otherwise phototropism tilts them all the same way.
Wipe leaves once a month. Dust on leaves blocks the already weak light.
When grow lights become necessary
If the room receives no natural light at all (finished basement, windowless bath), an LED grow light becomes necessary. A 20-30 W lamp aimed at the plant, on for 8 to 12 hours a day, is enough for most species.
Plenova measures available light in each room and suggests species that will survive with what you have. No bad surprise after the purchase.
A dark room is not a dead room. It is just space for different plants.
Your plants deserve more than a random app
Plenova names your plant, spots what is wrong, and reminds you of the right action at the right time.