Do Succulents Clean the Air? Science-Backed Facts

By James Wilson · January 24, 2026

Yes, succulents do clean the air, but their impact is modest compared to other houseplants. While they absorb carbon dioxide and release oxygen, especially at night via CAM photosynthesis, their overall air-purifying capacity is limited due to slower growth and lower leaf surface area. For meaningful indoor air improvement, combine succulents with high-performing plants like snake plants or peace lilies.

How Succulents Contribute to Air Purification

Succulents are known for their resilience and low maintenance, but many also wonder if they improve indoor air quality. The answer lies in their natural biological processes.

CAM Photosynthesis and Nighttime Oxygen Release

Unlike most plants, succulents use Crassulacean Acid Metabolism (CAM) photosynthesis. This adaptation allows them to open their stomata at night to minimize water loss in arid environments.

Absorb CO₂ at night and release oxygen
Reduce indoor carbon dioxide levels slightly
Improve bedroom air quality when placed indoors overnight

Limited VOC Removal Compared to Other Plants

While NASA's Clean Air Study highlighted certain plants' ability to remove volatile organic compounds (VOCs), succulents were not among the top performers.

Lower transpiration rates reduce air filtration efficiency
Smaller leaf surface area limits pollutant absorption
Slow growth means less metabolic activity

Best Succulents for Air Quality Improvement

Some succulents outperform others in air purification due to higher biomass and metabolic rates.

Snake Plant (Sansevieria trifasciata)

Though often classified separately, snake plant is technically a succulent. It’s one of the best air-purifying plants, removing benzene, formaldehyde, trichloroethylene, xylene, and toluene.

Aloe Vera

Known for its medicinal gel, Aloe vera also absorbs airborne pollutants and releases oxygen at night, making it ideal for bedrooms.

Zebra Plant (Haworthiopsis fasciata)

While primarily ornamental, it contributes to minor CO₂ reduction and adds humidity through minimal transpiration.

Plant Species	CO₂ Removed (mg/m³/day)	VOC Removal Efficiency	Photosynthesis Type	Light Requirement (fc)
Sansevieria trifasciata	58.6	High	CAM	100–200
Chlorophytum comosum (Spider Plant)	72.3	Very High	C3	200–400
Aloe vera	34.1	Moderate	CAM	200–300
Epipremnum aureum (Golden Pothos)	68.9	Very High	C3	150–250
Echeveria elegans	18.4	Low	CAM	300–500

Table data source:1, 2

The data shows that while succulents like Aloe vera and Sansevieria perform well, they generally remove less CO₂ than fast-growing C3 plants such as spider plants and pothos. However, CAM plants offer unique advantages in low-light and low-humidity environments.

Sansevieria stands out among succulents for its superior air-cleaning ability and low light tolerance, making it ideal for offices and bedrooms.

Maximizing Air Purification with Succulents

To enhance the air-purifying effects of succulents, consider these expert strategies:

Choose Larger, Mature Plants

Greater biomass increases gas exchange. Opt for fully grown specimens in 6–8 inch pots.

Group Plants Together

Clustering multiple plants creates a microclimate that boosts humidity and filtration efficiency.

Ensure Proper Light and Care

Healthy, actively growing plants purify air more effectively. Provide bright, indirect light and appropriate watering.

Water only when soil is completely dry
Use well-draining succulent mix
Rotate plants monthly for even growth

Frequently Asked Questions About Succulents and Air Quality

Do succulents improve indoor air quality?

Yes, succulents improve indoor air quality by absorbing carbon dioxide and releasing oxygen, especially at night. However, their ability to remove harmful volatile organic compounds (VOCs) is limited compared to plants like spider plants or peace lilies. Their contribution is beneficial but should be supplemented with other air-purifying species for noticeable results.

Which succulent is best for cleaning the air?

The snake plant (Sansevieria trifasciata) is the most effective succulent for air purification. It removes common indoor pollutants such as benzene, formaldehyde, and xylene, and continues to release oxygen at night, improving bedroom air quality and supporting better sleep.

Can having succulents in the bedroom help you sleep better?

Yes, certain succulents like snake plant and aloe vera release oxygen at night, which can increase room oxygen levels and promote easier breathing. Their low maintenance and nighttime oxygen output make them excellent choices for bedroom placement.

How many succulents do I need to clean the air in a room?

For measurable air improvement, NASA recommends at least one plant per 100 square feet (9.3 m²). However, due to succulents' slower metabolism, using a combination of succulents and high-efficiency air-purifying plants will yield better results.

Are there any risks to using succulents for air purification?

Most succulents are safe, but overwatering can lead to mold in soil, which may degrade air quality. Ensure proper drainage and avoid excessive humidity. Also, some succulents are toxic to pets if ingested, so choose non-toxic varieties like Haworthia if you have animals.