Do Succulent Plants Clean the Air? Science-Based Answer

By Emma Johnson · January 24, 2026

Yes, succulent plants do clean the air, but their air-purifying capacity is modest compared to other houseplants. While they absorb carbon dioxide and release oxygen through photosynthesis, their slow growth and minimal leaf surface area limit their overall effectiveness in improving indoor air quality. However, certain succulents like Aloe vera and Snake plant (Sansevieria) have demonstrated measurable air-cleaning abilities, particularly in removing volatile organic compounds (VOCs) such as benzene and formaldehyde under controlled conditions.

How Succulents Contribute to Air Purification

Succulents are popular for their low maintenance and aesthetic appeal, but many also wonder if they contribute to healthier indoor environments. The short answer is yes—succulents participate in natural air purification processes, though not as efficiently as some tropical or fast-growing foliage plants.

The Science Behind Air-Cleaning Plants

Plants purify air primarily through two mechanisms:

Photosynthesis: During daylight, succulents absorb carbon dioxide (CO₂) and release oxygen (O₂), improving air composition.
Phytoremediation: Some plants absorb airborne toxins through their leaves and roots, transferring them to soil microbes for breakdown.

NASA's Clean Air Study highlighted that certain plants can remove up to 87% of VOCs in sealed chambers over 24 hours. While most tested plants were not succulents, a few notable exceptions performed well.

Top Succulents That Improve Indoor Air Quality

Not all succulents are equal when it comes to air purification. These species have shown promising results in scientific evaluations:

Sansevieria trifasciata (Snake Plant)
Aloe vera
Crassula ovata (Jade Plant)
Epiphyllum oxypetalum (Orchid Cactus)

Why Snake Plant Stands Out

The Snake plant is technically a succulent due to its water-storing leaves. It performs Crassulacean Acid Metabolism (CAM) photosynthesis, allowing it to release oxygen at night—making it ideal for bedrooms. NASA research found it effective against formaldehyde, xylene, and toluene.

Aloe Vera: Natural Air and Health Booster

Besides mild air filtration, Aloe vera emits oxygen at night and contains compounds that may reduce airborne mold. Its gel is also widely used for skin healing, adding dual-purpose value.

Limitations of Succulents in Air Purification

Despite benefits, relying solely on succulents for clean indoor air has drawbacks:

Small leaf surface area reduces pollutant absorption.
Slow growth means lower metabolic activity.
Most studies were conducted in sealed laboratory chambers, not real homes.
Few succulents rank among the top 10 air-purifying houseplants.

Plant Species	Formaldehyde Removal Rate (μg/m³/h)	Test Environment	Study Duration
Sansevieria trifasciata	7.5	Sealed chamber (1m³)	24 hours
Aloe vera	4.2	Sealed chamber (1m³)	24 hours
Chlorophytum comosum (Spider Plant)	12.1	Sealed chamber (1m³)	24 hours
Dracaena marginata	9.8	Sealed chamber (1m³)	24 hours
No plant (control)	0.3	Sealed chamber (1m³)	24 hours

Table data source:1, 2

The data shows that while succulents like Sansevieria and Aloe vera do remove formaldehyde, their efficiency is significantly lower than non-succulent houseplants such as the Spider Plant. Real-world performance may be even less due to variable ventilation, light, and humidity.

Maximizing Air Purification with Succulents

To get the most out of your succulents for air quality improvement:

Place multiple plants in high-traffic or poorly ventilated rooms.
Combine succulents with higher-performing air purifiers or plants like peace lilies or pothos.
Ensure proper care: healthy plants perform better. Provide bright, indirect light and avoid overwatering.
Use activated charcoal in potting mix to enhance toxin adsorption.

Frequently Asked Questions About Succulents and Air Quality

Do succulents really purify the air?

Yes, succulents do purify the air to a limited extent by absorbing CO₂ and releasing oxygen. Some, like Snake plant and Aloe vera, can remove small amounts of indoor pollutants such as formaldehyde and benzene, especially in controlled environments.

Which succulent is best for air purification?

The Snake plant (Sansevieria trifasciata) is the most effective succulent for air cleaning. It removes multiple VOCs and releases oxygen at night, making it ideal for bedrooms and low-light spaces.

Can I rely on succulents alone to clean indoor air?

No, succulents should not be relied upon as the sole method of air purification. Their impact is minimal compared to mechanical air purifiers or more efficient houseplants like spider plants or peace lilies.

How many succulents do I need to improve air quality?

NASA’s study suggests at least one plant per 100 square feet (9.3 m²) for noticeable effect. However, due to succulents’ lower efficiency, you’d need more than average houseplants to achieve similar results.

Do succulents release oxygen at night?

Yes, certain succulents like Snake plant and Aloe vera use CAM photosynthesis, which allows them to absorb CO₂ and release oxygen at night, unlike most plants that only do so during the day.