Sempervivum ‘Red Rubin’, commonly known as Hens and Chicks, is a popular succulent prized for its striking color, low maintenance, and hardiness. It forms attractive rosettes, adding visual interest to various garden settings. It is well-suited for those looking for a resilient and appealing addition to their plant collection.
Unique Characteristics of Sempervivum Red Rubin
Its vibrant, deep red coloration intensifies with cooler temperatures or full sun exposure. It features a classic rosette form, typically growing 4-6 inches tall and 6-12 inches wide. Its leaves often have a glowing red center with silvery-green outer leaves, sometimes flushing to a full burgundy in winter. It prolifically produces new offsets around the base of the mother plant. It is exceptionally drought-tolerant and cold-hardy, thriving in diverse conditions.
Essential Care Requirements
Light
Sempervivum ‘Red Rubin’ requires at least six hours of direct sunlight daily for optimal growth and vibrant red hues. While it tolerates some partial shade, especially in hotter climates, insufficient light may cause the plant to lose some of its intense coloration. Consistent full sun maintains its compact rosette form and intense color.
Soil
Sempervivum ‘Red Rubin’ demands excellent drainage to prevent root issues. Gritty, sandy, or succulent-specific soil mixes are recommended. Avoid heavy, water-retentive soils, as they lead to waterlogging and root rot. An ideal soil pH ranges from 6.0 to 7.0.
Watering
Sempervivum ‘Red Rubin’ is inherently drought-tolerant once established, storing water within its fleshy leaves. Use the “soak and dry” method: thoroughly water the soil, then allow it to dry completely before the next application. Overwatering is a common pitfall, leading to root rot, especially in cold, wet conditions. During its primary growing season in spring and summer, weekly watering may be beneficial, but always ensure the soil has dried out between waterings.
Temperature and Hardiness Zones
This succulent is cold-hardy, thriving in USDA Zones 3 through 9. It can withstand freezing temperatures and even survive winters under an insulating blanket of snow. While preferring cooler temperatures, Sempervivum ‘Red Rubin’ tolerates heat with adequate air circulation and proper watering. Protect from heavy rains and standing water to prevent rot, especially in colder periods.
Propagating Sempervivum Red Rubin
Propagating Sempervivum ‘Red Rubin’ is achieved through its natural production of offsets, often called “chicks.” The mother rosette, or “hen,” sends out horizontal stems from which these smaller rosettes develop. Detach these offsets from the parent plant once they have formed their own roots and are a few inches tall. To propagate, gently grasp an offset and sever it, ensuring some roots remain intact. Replant the detached chick directly into well-draining soil, similar to mature plants. Spring and summer are the most favorable times for propagation, as the plant is actively growing. This method allows for easy expansion of your collection.
Common Challenges and Solutions
While resilient, Sempervivum ‘Red Rubin’ can face issues if care requirements are not met. Root rot is the most frequent problem, typically caused by excessive watering or poorly draining soil. Address this by improving soil drainage with grit or sand, and adjusting watering frequency to allow the soil to dry completely between applications. Etiolation, or stretching, occurs when the plant does not receive enough light. If rosettes appear elongated and less compact, move the plant to a brighter location with more direct sunlight for denser, more colorful growth. While generally pest-resistant, it can occasionally encounter mealybugs or aphids. Minor infestations can often be managed by manually removing the pests or by using a gentle insecticidal soap. A strong blast of water from a hose can also dislodge aphids.