Search for air purifying plants and the same names come up again and again, most of them traced back to the 1989 NASA Clean Air Study, which measured how plants removed volatile organic compounds (VOCs) inside small sealed chambers. The honest version: at normal room scale, with normal ventilation, houseplants have a negligible effect on indoor air (see Do houseplants really purify air?). This list covers the 15 plants most often recommended for clean air — with care level, pet safety, and the room each one suits — so you can pick one you will enjoy growing.
How Plants Interact With Air
In chamber studies, plants reduced VOCs in two ways: gases taken in through the stomata (tiny pores on the leaves), and microbes in the potting soil breaking some compounds down. Both mechanisms are real. The problem is scale: a home constantly exchanges air with the outdoors, and a few potted plants work far too slowly to compete with that. If indoor air quality is your concern, ventilation, reducing pollution sources, and a HEPA purifier for particles do far more.
Top 15 Air Purifying Plants at a Glance
| # | Plant | Care Level | Pet Safe | Best Room |
|---|---|---|---|---|
| 1 | Snake Plant | Easy | No | Bedroom |
| 2 | Pothos | Very Easy | No | Office, bathroom |
| 3 | Spider Plant | Easy | Yes | Kitchen, nursery |
| 4 | Peace Lily | Easy | No | Bedroom, bathroom |
| 5 | Rubber Plant | Easy | No | Living room |
| 6 | Boston Fern | Medium | Yes | Bathroom, kitchen |
| 7 | Bamboo Palm | Easy | Yes | Living room |
| 8 | Dracaena | Easy | No | Office, living room |
| 9 | English Ivy | Medium | No | Bathroom, bedroom |
| 10 | Chinese Evergreen | Very Easy | No | Office, low-light rooms |
| 11 | Areca Palm | Medium | Yes | Living room |
| 12 | Aloe Vera | Easy | No | Kitchen |
| 13 | ZZ Plant | Very Easy | No | Office, dim rooms |
| 14 | Philodendron | Easy | No | Living room |
| 15 | Parlor Palm | Easy | Yes | Bedroom, office |
#1 Snake Plant (Dracaena trifasciata)
The snake plant is one of the lowest-maintenance plants you can buy. It uses CAM photosynthesis, taking in CO₂ at night instead of during the day — interesting botany, though the effect on bedroom air is tiny. It was one of the plants in the NASA chamber study. The plant thrives in virtually any light condition from bright indirect to very low light. Water once every 2–6 weeks depending on season. Note: toxic to cats and dogs.
#2 Pothos (Epipremnum aureum)
Pothos is one of the most forgiving houseplants there is, with fast-growing vines that trail or climb. It tolerates low light, drought, overwatering, neglect, and temperature swings. Perfect for offices, bathrooms, and beginners. Toxic to pets and children.
#3 Spider Plant (Chlorophytum comosum)
The spider plant is listed as non-toxic to cats and dogs by the ASPCA and is also very hard to kill. It was among the plants tested in sealed chambers in the NASA study. They produce cascading "spiderettes" (baby plants) that can be propagated endlessly, making them the most generous plant in your collection. Excellent in kitchens, children's rooms, and nurseries.
#4 Peace Lily (Spathiphyllum wallisii)
The peace lily was one of the plants in the NASA chamber study and is one of the few common foliage plants that flowers reliably indoors. It blooms regularly even in low light, adding aesthetic value. The dramatic droop when thirsty makes it an easy plant to read. Toxic to cats and dogs.
#5 Rubber Plant (Ficus elastica)
The rubber plant's large, glossy, dark leaves make it a striking floor plant. It prefers bright indirect light and moderate watering. Toxic to pets and humans if the milky sap is ingested.
#6 Boston Fern (Nephrolepis exaltata)
Boston ferns are lush, feathery plants that love humidity. The trade-off: they require consistent moisture, high humidity, and indirect light. Their care demands place them in "medium" difficulty, but in a bright bathroom with natural moisture, they practically care for themselves. Listed as non-toxic to cats and dogs by the ASPCA.
#7 Bamboo Palm (Chamaedorea seifrizii)
The bamboo palm was among the plants in Wolverton's NASA chamber work. It can reach 4–12 feet tall, making it a good fit for large living rooms and foyers where you want dramatic green impact. The ASPCA lists bamboo palm as non-toxic to cats and dogs. Tolerates lower light than most palms.
#8 Dracaena (Dracaena marginata / deremensis)
Dracaenas are tough, upright plants that suit office environments. They grow slowly, tolerate fluorescent light, and need minimal watering. Toxic to cats and dogs. The "Warneckii" and "Janet Craig" varieties are especially tolerant of office conditions.
#9 English Ivy (Hedera helix)
English ivy is a classic trailing plant. It cascades beautifully from hanging baskets or shelves. Needs medium light, consistent moisture, and good air circulation. Toxic to humans and animals if ingested.
#10 Chinese Evergreen (Aglaonema)
Chinese evergreens tolerate conditions that kill other plants: deep shade, dry air, sporadic watering. Their richly patterned foliage (red, pink, silver, green) makes them decorative powerhouses. Perfect for hallways, dim offices, and low-light corners where most plants struggle. Toxic to pets.
#11 Areca Palm (Dypsis lutescens)
The areca palm is a feathery, fast-growing palm that brings a tropical look to a bright room. Listed as non-toxic to cats and dogs by the ASPCA. Prefers bright indirect light.
#12 Aloe Vera
Aloe vera is a sun-loving succulent that needs very little water. Many people keep it for the gel inside its leaves, traditionally used on minor skin irritation. Best placed in a sunny kitchen window. Toxic to pets.
#13 ZZ Plant (Zamioculcas zamiifolia)
The ZZ plant was not part of the 1989 NASA study; it is on this list because it is so often sold as an air purifier and because it is very hard to kill. ZZ plants thrive in near-darkness, survive weeks without water, and never complain. The ultimate office plant. Toxic to humans and animals.
#14 Philodendron (Philodendron hederaceum)
Heart-leaf philodendrons were among the plants in NASA's chamber study. They grow vigorously and trail or climb with little fuss. They tolerate low to medium light and modest watering schedules. Toxic to pets and children.
#15 Parlor Palm (Chamaedorea elegans)
The parlor palm is a good choice when you need a pet-safe, elegant plant. It tolerates low light unusually well for a palm, and grows to a manageable 3–4 feet indoors. It prefers slightly moist soil and indirect light. Listed as non-toxic to cats and dogs by the ASPCA.
How Many Plants Per Room?
For air quality, there is no number of potted plants that makes a meaningful difference in a normally ventilated room — the research points to far more plants than anyone could keep. Choose as many as you can care for and enjoy, and rely on ventilation and source control for cleaner air.
Pet-Safe Air Purifying Plants
| Plant | Why Grow It | Light Needs | Care Level |
|---|---|---|---|
| Spider Plant | Forgiving, makes easy-to-root babies | Medium to bright indirect | Easy |
| Bamboo Palm | Tall, tropical look | Bright indirect | Easy |
| Areca Palm | Feathery fronds, fast growth | Bright indirect | Medium |
| Boston Fern | Lush hanging plant for humid rooms | Indirect/diffused | Medium |
| Parlor Palm | Elegant, compact, low-light tolerant | Low to medium indirect | Easy |
Frequently Asked Questions
Q: Do air purifying plants replace HEPA air purifiers?
No. At room scale, plants have a negligible effect on VOCs and cannot filter particulate matter (dust, PM2.5, pollen, pet dander). If air quality matters to you, ventilate and use a properly sized HEPA purifier.
Q: Does plant size affect air purification?
A larger plant has more leaf area, but even large plants make no meaningful difference to the air in a ventilated room. Choose size for looks and space.
Q: Do plants purify air at night?
Most plants take in CO₂ during the day. CAM plants (snake plant, aloe) take it in at night instead — but the amount is far too small to change the air in a bedroom.
Q: Which plant removes the most toxins?
In a real home, none of them removes enough to matter. Pick the plant that suits your light, your pets, and your care routine.
Q: Should I remove dust from leaves?
Yes. Dust blocks light from reaching the leaf. Wipe leaves gently with a damp cloth every month or so to keep them healthy and looking good.
