The “String of Pillows” plant (Pellionia pulchra or Pellionia repens) is a popular indoor trailing plant, also known as Watermelon Begonia, Polynesian Ivy, and Rainbow Vine. Its decorative appeal comes from lush, cascading vines with unique foliage. The leaves typically display a captivating pattern of green with contrasting silvery or white veins, sometimes featuring purplish undersides, creating a soft, satiny appearance. Its relatively straightforward care makes it a rewarding addition to many indoor plant collections.
Caring for Your String of Pillows
Light Needs
The String of Pillows plant thrives in bright, indirect light. An east-facing window, providing gentle morning sun, is often ideal. Alternatively, a spot a few feet from a brighter south or west-facing window with filtered light works well. Direct sunlight can scorch delicate leaves or fade their vibrant patterns. Insufficient light leads to leggy growth and subdued leaf coloration.
Watering Schedule
Maintain consistent soil moisture for the String of Pillows, but avoid waterlogging. Allow the top one to two inches (2.5-5 cm) of soil to dry to the touch before watering again. Overwatering is a common issue that can lead to root rot and yellowing leaves, while underwatering may cause crispy, brown leaves. Using room temperature, filtered, or distilled water is preferable, as these plants can be sensitive to minerals found in tap water.
Soil Requirements
A fertile, well-draining potting mix is suitable for the String of Pillows. A good quality commercial potting soil provides a solid foundation. Enhancing the mix with perlite, peat moss, or sand improves drainage and aeration, which are beneficial for root health. Proper drainage prevents water from sitting around the roots, reducing the risk of fungal issues.
Temperature and Humidity
These plants prefer warm indoor temperatures, ideally ranging between 65 and 80°F (18-27°C). Protect them from temperatures below 60°F (15°C) and sudden temperature fluctuations, such as cold drafts from windows or air conditioning vents. High humidity is also beneficial, with levels of 60% or more being ideal to mimic their native tropical environment. Placing the pot on a pebble tray filled with water or using a room humidifier can help increase ambient humidity.
Fertilizing
During the active growing seasons of spring and summer, the String of Pillows plant benefits from regular fertilization. Apply a balanced liquid houseplant fertilizer, such as a 20-20-20 formulation, diluted to half the recommended strength. Fertilize approximately every four to six weeks, ensuring the plant is watered before application to aid nutrient absorption and prevent root burn. Cease fertilization during the fall and winter months when the plant’s growth naturally slows.
Propagating String of Pillows
Propagating the String of Pillows is straightforward, primarily through stem cuttings. The best time to propagate is during the plant’s active growing period in spring and summer.
To take a cutting, select a healthy stem and cut a 4-inch (10 cm) section. Remove leaves from the bottom 1-2 inches, exposing nodes for root growth. Cuttings can be rooted directly in moist potting soil or water.
When rooting in soil, plant the cutting into a well-draining mix, ensuring at least one node is submerged. Warm soil (70-75°F / 21-24°C) encourages rooting. While water rooting is possible, some growers find the transition to soil less successful.
Troubleshooting Common Problems
Most String of Pillows issues are easily remedied by adjusting their environment. Understanding plant signs helps diagnose problems.
If leaves turn brown or crispy, it often indicates underwatering, insufficient humidity, or too much direct sunlight. Adjust watering, increase humidity (pebble tray/humidifier), and move to bright, indirect light.
Yellowing leaves typically signal overwatering and potential root rot. Check soil moisture, allow the top layer to dry between waterings, and inspect roots for rot.
Leggy growth and faded leaf patterns suggest insufficient light. Relocate to a brighter, indirectly lit area for compact growth and enhanced coloration.
Common pests include spider mites, mealybugs, and aphids. Regular inspection (especially undersides of leaves) and prompt treatment with insecticidal soap or neem oil manage infestations.