Pothos (Epipremnum aureum), also known as Devil’s Ivy, is a popular houseplant with heart-shaped leaves and trailing vines. This adaptable and easy-to-care-for plant is often chosen by both new and experienced enthusiasts. While commonly grown in soil, Pothos can also thrive in water, allowing observation of its root development.
Benefits of Growing Pothos in Water
Growing Pothos in water offers several advantages. This method simplifies propagation, as cuttings readily root in water, often faster than in soil. It allows for continuous observation of the developing root system, which many find aesthetically pleasing and educational. This cultivation method also reduces common pest issues associated with soil, providing a cleaner indoor gardening experience. Maintaining Pothos in water can be a low-maintenance approach, eliminating concerns about soil moisture levels and traditional watering schedules.
How to Propagate Pothos in Water
To propagate Pothos in water, take healthy cuttings from a mature plant. Select a robust vine with at least two to four nodes, which are small bumps along the stem where roots and leaves emerge. Using clean, sharp scissors or pruning shears, make a cut about 1/4 inch below a node. This helps prevent damage and disease.
After taking the cutting, carefully remove any leaves that would be submerged in water, as they can rot and contaminate the water. Leaving two or three leaves at the top of the cutting is sufficient for photosynthesis. Place the prepared cuttings into a clean glass container filled with room-temperature water, ensuring at least one or two nodes are fully submerged while leaves stay above the waterline. Change the water every five to seven days to keep it fresh, oxygenated, and prevent bacterial buildup, which is crucial for healthy root development. Roots typically begin to form within two to four weeks.
Long-Term Care for Pothos in Water
For long-term water cultivation, optimal conditions are important for sustained health. Place the vessel in a location that receives bright, indirect light; direct sunlight can scorch leaves and promote algae growth. Maintaining consistent room temperatures, ideally between 65-85°F (18-29°C), also supports healthy growth.
Water quality is significant. While tap water can be used, allowing it to sit out for 24 hours can dissipate chlorine. Regularly changing the water, at least once a week, prevents stagnation and replenishes oxygen for the roots. Since water lacks nutrients, a diluted liquid fertilizer (for hydroponics or houseplants in water) is essential for growth. Dilute the fertilizer to about 1/4 strength or follow product instructions, typically applying monthly during active growing seasons. Periodically clean the vessel to prevent algae buildup, which competes with the plant for nutrients and light.
Common Problems When Growing Pothos in Water
Pothos grown in water can encounter a few common issues. Yellowing leaves often signal a nutrient deficiency, as water alone lacks necessary nutrients. This can be addressed with a balanced liquid fertilizer. Yellowing can also occur from too much direct light, so adjust the plant’s position to receive bright, indirect light.
While less common than in soil, root rot can still occur if water becomes stagnant and lacks sufficient oxygen. Regular water changes (every few days to a week) prevent this by providing fresh, oxygenated water. Algae growth is another frequent issue, typically caused by too much light. Using opaque containers or placing clear vessels in areas with less direct light can mitigate algae development. Slow growth may indicate insufficient nutrients or inadequate light, requiring reassessment of fertilization or light exposure.