Searching for “purple pothos” often leads to vibrant images of plants with striking violet and magenta foliage. This popular search term reflects a widespread desire for richly colored houseplants. While the term “purple pothos” is frequently used, it points to a common misunderstanding within the plant community.
Unraveling the Mystery of “Purple Pothos”
A true “purple pothos” variety, specifically a purple-leafed Epipremnum aureum, does not exist. Pothos plants, belonging to the genus Epipremnum, are recognized for foliage in shades of green, yellow, white, or silver variegation. Cultivars like ‘Golden Pothos’ or ‘Marble Queen’ display these colors, not purple. The informal name “purple pothos” is a misnomer, often applied to other vining houseplants with actual purple coloration, sometimes confused with true Pothos due to similar growth habits.
Plants Often Confused with “Purple Pothos”
Many plants feature stunning purple foliage and are often what people seek when searching for “purple pothos.” Understanding their distinct characteristics helps identify them correctly.
Tradescantia varieties are often mistaken for “purple pothos.” Tradescantia pallida ‘Purple Heart’ is a popular choice, known for its deep royal purple, lance-shaped leaves and thick, trailing stems. Its foliage can reach 2 to 5 inches long, often covered in soft, pale hairs, and it produces small pink to pale purple flowers.
Another common Tradescantia is Tradescantia zebrina, also called Inch Plant or Wandering Dude. Its leaves are typically green, silver, and white striped on the upper surface with a vibrant magenta or purple underside. Both species have a vining or trailing habit, making them suitable for hanging baskets, much like Pothos.
Gynura aurantiaca, commonly known as Purple Passion Plant or Velvet Plant, is another striking example often confused with “purple pothos.” This plant features dark green, ovate leaves covered in soft, velvety purple hairs, giving it an iridescent appearance. Stems are initially upright but tend to sprawl and trail as the plant matures. Native to Southeast Asia, Gynura aurantiaca can produce small orange-yellow flowers, though these are often removed due to an unpleasant odor.
Why a True Pothos Might Show Purple Tones
A Pothos plant can occasionally exhibit purplish or reddish tints, often seen on the undersides of leaves or along the stems. The appearance of these hues is typically a response to environmental conditions rather than a stable genetic trait.
Intense light exposure can cause Pothos leaves to develop purplish tones as a stress response, leading to the production of anthocyanins. Anthocyanins are pigments responsible for red, purple, and blue colors in plants, acting as a natural sunscreen. Nutrient deficiencies, particularly a lack of phosphorus, can cause older Pothos leaves to turn a dull, dark green, sometimes followed by a purple tint. Cold soil temperatures can also hinder a plant’s ability to absorb phosphorus, contributing to this purple discoloration even if the nutrient is present in the soil.
Caring for Your Purple-Leaved Plant
Proper care is important for maintaining the vibrant purple coloration of plants like Tradescantia and Gynura aurantiaca. Consistent attention to their environmental needs helps these plants thrive.
Bright, indirect light is crucial for these purple-leaved plants to develop and maintain their rich hues. Direct sunlight can scorch their delicate foliage, while insufficient light may cause the purple coloration to fade, resulting in greener leaves. Watering should be consistent, allowing the topsoil to dry slightly between waterings to prevent root rot. Moderate to high humidity levels are also beneficial, replicating their native tropical environments.
A well-draining potting mix is suitable for these plants. During the active growing season, from spring through fall, a balanced liquid fertilizer can be applied monthly at half strength. Regular pruning helps maintain a bushy shape and encourages fuller growth, preventing the plants from becoming leggy. For Gynura aurantiaca, avoid misting directly onto the fuzzy leaves, as trapped moisture can lead to issues like rot or fungal problems.