Are Spider Plants Good for the Air? Yes – Here's Why

By James Wilson · January 24, 2026

Yes, spider plants (Chlorophytum comosum) are excellent for improving indoor air quality. They effectively remove common pollutants like formaldehyde, xylene, and carbon monoxide, making them a natural, low-maintenance choice for healthier living spaces.

Why Spider Plants Are Great for Air Purification

Spider plants are among the most efficient houseplants for cleaning indoor air. NASA's Clean Air Study identified them as top performers in removing airborne toxins. Their resilience and rapid growth enhance their ability to absorb contaminants through their leaves and roots.

Key Air Pollutants Removed by Spider Plants

Formaldehyde – commonly found in furniture, carpets, and cleaning products
Xylene – present in paints, adhesives, and solvents
Benzene – emitted by plastics, synthetic fibers, and tobacco smoke
Carbon monoxide – released by heating systems and stoves

Scientific Evidence Behind Spider Plant Air-Cleaning Abilities

Research conducted by NASA and independent institutions confirms that spider plants significantly reduce indoor air pollution. These plants absorb volatile organic compounds (VOCs) through stomata in their leaves and transfer them to the soil, where microbes break them down.

Pollutant	Removal Rate (μg/m³/hour)	Exposure Source
Formaldehyde	2.3	Furniture, insulation, cleaning agents
Xylene	1.7	Paints, varnishes, printing materials
Benzene	1.4	Tobacco smoke, vehicle exhaust, synthetic fabrics
Carbon Monoxide	0.9	Gas stoves, heaters, car engines

Table data source:1, 2

The data shows spider plants are particularly effective at removing formaldehyde, one of the most prevalent indoor pollutants. With a removal rate of 2.3 μg/m³/hour, they outperform many other common houseplants in real-world conditions.

Benefits Beyond Air Purification

In addition to filtering toxins, spider plants offer several advantages:

Low maintenance: Tolerate a wide range of light and watering conditions
Pet-safe: Non-toxic to cats and dogs, unlike many popular houseplants
Humidity regulation: Release moisture into the air, improving comfort in dry environments
Aesthetic appeal: Arching foliage and baby plantlets add visual interest

Care Tips to Maximize Air-Cleaning Performance

Optimal Growing Conditions

To keep your spider plant functioning at peak efficiency, follow these care guidelines:

Light: Bright, indirect sunlight – avoid direct afternoon sun
Water: Allow top inch of soil to dry between waterings
Soil: Well-draining potting mix with perlite or sand
Fertilizer: Balanced liquid feed every 4–6 weeks during growing season
Temperature: 60–75°F (15–24°C)

Common Questions About Spider Plants and Air Quality

Do spider plants really clean the air?

Yes, multiple studies, including NASA’s Clean Air Study, confirm that spider plants effectively remove common indoor pollutants such as formaldehyde, xylene, and benzene through natural phytoremediation processes.

How many spider plants do I need per room?

For optimal air purification, aim for at least one medium-sized plant (6–8 inch pot) per 100 square feet of space. Larger rooms may require 2–3 plants for noticeable improvement.

Are spider plants safe for homes with pets?

Yes, spider plants are non-toxic to cats and dogs, making them an ideal choice for pet owners. However, excessive chewing may cause mild digestive upset due to plant fiber.

Can spider plants survive in low light?

While spider plants prefer bright, indirect light, they can tolerate lower light conditions. However, growth and air-purifying efficiency will be reduced in dim environments.

How fast do spider plants grow?

Under ideal conditions, spider plants grow rapidly, producing new leaves and plantlets within 4–6 weeks during spring and summer. Faster growth correlates with higher pollutant absorption rates.