The Othonna capensis, commonly known as Ruby Necklace, is a succulent vine. Its slender, purplish-red stems bear bean-shaped leaves that shift from green to vibrant red or purple when exposed to ample sunlight. This color-changing ability and trailing habit make it a popular low-maintenance plant for indoor or outdoor spaces.
Core Care Essentials
Light
Ruby Necklace plants thrive in bright, indirect light, which maintains their distinctive coloration. A south or west-facing window provides several hours of morning or afternoon sun. While some direct sunlight intensifies red and purple tones, avoid harsh midday sun to prevent scorching. Low light conditions can cause leaves to remain green and the plant to become leggy.
Watering
Ruby Necklace plants are drought-tolerant, storing water in their fleshy leaves. Overwatering is a common cause of root rot, so allow the soil to dry out completely between waterings. Check soil moisture by inserting a finger an inch or two deep; water if dry. During the growing season, watering may be more frequent, but water cautiously to prevent excessive moisture.
Soil
Well-draining soil is essential for healthy root development and to prevent waterlogging. A specialized succulent or cactus potting mix is recommended. Alternatively, amend a regular potting mix with materials like perlite or pumice to enhance drainage. The ideal soil pH is slightly acidic, between 6.0 and 6.5.
Temperature and Humidity
Ruby Necklace plants prefer moderate to warm temperatures, thriving between 60 to 80°F (15-27°C). They are sensitive to frost; protect them from temperatures below 50°F (10°C). Average household humidity levels are sufficient; they do not require high humidity. Avoid placing them near cold windows or heating vents to prevent temperature fluctuations.
Fertilizing
Minimal fertilization is sufficient, as Ruby Necklace plants are not heavy feeders. During the growing season, apply a balanced liquid fertilizer, diluted to half strength, once a month or every six weeks. Use a fertilizer low in nitrogen to avoid burning roots. Reduce or cease fertilization during fall and winter when growth slows.
Potting and Repotting
When selecting a container, pots with adequate drainage holes are essential for drainage and to prevent root issues. Porous materials like terracotta, concrete, or ceramic are preferred as they wick away moisture. These trailing succulents do not require frequent repotting and tolerate being somewhat root-bound.
Repotting is needed every two to three years, or when root-bound, to refresh soil and provide more room. Repot gently during the growing season (spring or summer) to avoid damaging delicate stems and roots. Choose a new pot only slightly larger than the previous one, ensuring proper drainage.
Propagating Ruby Necklace
Propagating Ruby Necklace plants is simple through stem cuttings. Select a healthy stem section 2 to 6 inches long. Allow the cut end to dry and form a callus for one to two days before planting to prevent rot.
Once callused, plant the cutting directly into a well-draining succulent soil mix. Cuttings can also be rooted in water before transferring to soil. Place cuttings in bright, indirect light, and keep the soil barely moist but not soggy as roots form. Roots typically form within weeks.
Addressing Common Problems
Ruby Necklace plants are generally resilient, but they can encounter common issues that indicate a need for adjusted care. If the plant exhibits leggy growth or lacks vibrant red or purple coloration, this often indicates insufficient light. Moving to brighter, indirect light or supplementing with a grow light can encourage denser growth and more intense color.
Root rot is a frequent problem, primarily caused by overwatering and poor drainage. Signs include soggy soil and mushy stems. To address this, allow soil to dry completely between waterings and ensure the plant is in a well-draining pot and soil mix.
While generally resistant, Ruby Necklace plants can be affected by common succulent pests such as mealybugs or spider mites. Regularly inspect the plant and wipe off pests with rubbing alcohol or use insecticidal soap to manage infestations.
Shriveling leaves can indicate either underwatering or, if accompanied by soft stems, severe root rot. If leaves plump up after watering, it suggests the plant was thirsty. If stems are soft and leaves remain shriveled despite watering, it indicates root rot, requiring an adjustment to the watering schedule and soil conditions.