Lepismium bolivianum, often known as Bolivian Rhipsalis or Forest Cactus, is an epiphytic cactus native to the tropical forests of Bolivia. Its attractive cascading growth habit and relatively easy care make it a popular choice for ornamental houseplants and hanging baskets.
Lepismium Bolivianum Characteristics
Lepismium bolivianum features long, slender, segmented stems that can grow up to several meters, creating a striking trailing effect. These stems are typically green, but in brighter light, they can develop reddish or purplish hues. Unlike many cacti, Lepismium bolivianum lacks prominent spines, instead having small scales. Small, bell-shaped flowers, often white or pinkish, emerge along the stems in late spring to early summer. These delicate blooms last for several days to a week, followed by small, red, berry-like fruits if pollinated.
Lepismium Bolivianum Care Guide
Light
Lepismium bolivianum thrives in bright, indirect light, mimicking its natural habitat under tree canopies. A few feet from a bright window or in a north-facing window is ideal. Direct, intense sunlight, especially during midday, can scorch its delicate stems, causing them to turn red or brown. Too little light can lead to leggy growth and a lack of vibrant stem coloration.
Watering
This cactus is drought-tolerant, preferring its soil to dry out between waterings. During the spring and summer growing season, water thoroughly when the top half of the soil feels dry. Reduce watering significantly in autumn and winter as growth slows. Overwatering is a common issue leading to root rot; it’s better to underwater.
Soil Requirements
Lepismium bolivianum requires a well-draining and airy potting mix to prevent waterlogging and root rot. A suitable mix combines commercial cactus or succulent soil with perlite, orchid bark, or coarse sand. This mimics its epiphytic nature, where it naturally grows on trees or rocks.
Temperature and Humidity
It prefers average room temperatures, ideally 60-85°F (15-29°C). It is sensitive to cold, requiring protection from temperatures below 50°F (10°C) as frost causes damage. While it adapts to average household humidity, it thrives in moderate to high levels. Increase humidity with a pebble tray or humidifier.
Fertilization
During the spring and summer growing season, fertilize with a balanced liquid fertilizer. Dilute to half strength to avoid over-fertilization. Fertilize every four to six waterings or once a month. Reduce or cease fertilization during cooler autumn and winter months when growth slows.
Propagating Lepismium Bolivianum
Propagating Lepismium bolivianum is straightforward through stem cuttings. Select a healthy stem segment and cut it using clean, sharp scissors or shears. Allow the cut end to dry and form a callus for a few days to prevent rot. After callusing, insert the cut end about a quarter-inch deep into a well-draining rooting medium, such as perlite and peat moss. Keep the rooting medium lightly moist, not soggy, in a warm location with bright, indirect light. Roots typically form within a few weeks to a month, after which the new plant can be cared for as a mature specimen.
Common Issues and Solutions
Shriveling stems often indicate underwatering or excessive direct sunlight. Adjusting watering to ensure soil dries between waterings and moving the plant to bright, indirect light can resolve this. Conversely, mushy or yellowing stems suggest overwatering and potential root rot. If root rot is suspected, remove the plant, trim affected roots, and repot in fresh, well-draining soil.
Lack of flowering can result from insufficient light or nutrients. Moving the plant to brighter, indirect light and ensuring consistent fertilization during the growing season can encourage blooms. Pests like mealybugs and spider mites can occasionally affect Lepismium bolivianum. Regular inspection and treatment with insecticidal soap or wiping with a damp cloth can manage these issues.