The Pothos plant (Epipremnum aureum) is one of the world’s most popular and widespread houseplants. Common names, such as Devil’s Ivy and Golden Pothos, allude to its incredible hardiness and often yellow-speckled foliage. This tropical vine is highly valued for its attractive, heart-shaped leaves and versatile use in interior spaces. Its widespread appeal stems from a combination of scientific benefits and ease of ownership, making it a favorite among home gardeners and interior designers.
Scientific Role in Indoor Air Quality
The Pothos plant gained recognition for its ability to filter airborne toxins, an attribute highlighted by the 1989 NASA Clean Air Study. This research investigated the capacity of common houseplants to remove volatile organic compounds (VOCs) from sealed environments. The Pothos demonstrated effectiveness in mitigating exposure to several common indoor air pollutants.
This plant helps to absorb chemicals like formaldehyde, often released from furniture and cleaning products, and benzene and trichloroethylene, common components in paints and solvents. The plant cleans the air through a two-part process involving the leaves and the root-soil system. The leaves absorb gaseous pollutants, which are then translocated to the roots and surrounding soil.
The microbes within the potting mix break down these toxic compounds into harmless substances. While the concentration of plants needed to purify a typical home is far greater than generally kept, the Pothos still contributes to a healthier environment by continuously processing these compounds. Its consistent presence acts as a natural, low-maintenance bio-filter.
Resilience and Decorative Adaptability
The Pothos plant is an extremely low-maintenance houseplant, making it an excellent choice for beginners. It is remarkably tolerant of neglect and can survive in a wide range of indoor conditions. Although it thrives best in bright, indirect light, Pothos can tolerate low light levels, such as in offices or darker rooms, though this will slow its growth and reduce variegation.
Its forgiving nature also extends to its watering requirements, as it is far more sensitive to overwatering than to brief periods of dryness. Allow the top 50% to 75% of the soil to dry out completely between watering sessions to prevent root issues. The plant’s vining growth habit offers immense versatility for decorating interior spaces.
It is frequently displayed in hanging baskets, where its long stems gracefully cascade down. Alternatively, the Pothos can be trained to climb vertically up a moss pole or support structure, which encourages the leaves to grow larger. The plant is also easy to propagate; simple stem cuttings can root in a glass of water, a popular method for multiplying the plant.
Important Safety Warnings
Despite its many benefits, the most important consideration for Pothos ownership is its inherent toxicity. The plant contains insoluble calcium oxalate crystals, called raphides, which are present in all parts of the plant, including the leaves and stems.
If a leaf is chewed or ingested, the raphides are released and penetrate the soft tissues of the mouth, throat, and digestive tract. This causes immediate and intense irritation, leading to a burning sensation and localized swelling. In pets, particularly cats and dogs, ingestion can result in excessive drooling, vomiting, and difficulty swallowing.
For small children, symptoms are similar and include mouth irritation, swelling of the lips or tongue, and nausea. While ingestion is rarely life-threatening, prompt attention is advised. Owners should ensure the plant is placed well out of reach of curious pets and children. Hand washing is also recommended after handling the plant to prevent the sap from causing skin irritation.