Crassula multicava ‘Red Luna’ is a succulent known for its deep green leaves with striking red margins. Also called Fairy Crassula, Pitted Crassula, or London Pride, it is appreciated for its visual appeal and straightforward care. The plant produces small, star-shaped flowers, typically in shades of red to pale pink.
Caring for Crassula Multicava Red Luna
Crassula multicava ‘Red Luna’ thrives in bright, indirect sunlight. While it can tolerate morning sun, intense afternoon sun can scorch its leaves. For indoor environments, placing the plant in a window that receives at least six hours of indirect light daily is beneficial. Adequate light prevents leggy growth and supports the plant’s compact form.
Water ‘Red Luna’ using the “soak and dry” method. This involves thoroughly watering the plant until water drains from the bottom of the pot, then allowing the soil to dry out completely before the next watering. Overwatering can lead to root rot, so ensure well-draining soil and a pot with drainage holes. During cooler winter months, reduce watering frequency as the plant’s growth slows.
A well-draining soil mix is important for the health of Crassula multicava ‘Red Luna’. A commercial succulent or cactus mix is suitable, and amendments like perlite or pumice can be added to improve drainage and aeration. The plant prefers a soil pH between 6.5 and 7.5. Terracotta pots are often recommended due to their porous nature, which helps prevent excess moisture retention.
This succulent prefers average indoor temperatures, ideally ranging from 65°F to 75°F during the day, and can tolerate cooler nights around 50°F. While it can withstand brief periods down to 25°F, it is sensitive to frost and should be protected from freezing temperatures. Crassula multicava ‘Red Luna’ prefers lower humidity levels, typically around 30-50%.
Fertilization requirements for ‘Red Luna’ are minimal. If desired, a balanced, water-soluble fertilizer diluted to half or quarter strength can be applied once a month during the active growing season in spring and summer. Over-fertilization can harm the plant, potentially causing root burn or salt buildup. Repotting should be done as needed, preferably in the spring at the start of its active growth period, ensuring the soil is dry before transplanting.
Enhancing Red Coloration
The red margins of ‘Red Luna’ leaves intensify in response to environmental factors. Increased exposure to bright light, which the plant interprets as a form of stress, significantly enhances these red hues. Cooler temperatures also contribute to the intensification of red pigmentation. Providing slightly more direct, but not scorching, sunlight can encourage more prominent red edges. It is important to differentiate this beneficial stress from sunburn, which appears as brown or white patches and indicates too much intense light.
Propagating and Addressing Issues
Crassula multicava ‘Red Luna’ is easily propagated through several methods. Plantlets naturally form on flower stems; these can root independently or be removed and planted in well-draining soil. Stem cuttings are also a reliable method: cut a healthy stem, allow it to callus for a few days to prevent rot, then plant in a well-draining succulent mix. Roots typically develop within a few weeks. Leaf cuttings are another option: twist off a healthy leaf, allow it to callus, then place it on moist soil until roots and new growth emerge.
Common issues include leggy growth, indicating insufficient light; move the plant to a brighter location. Mushy, yellowing leaves signal overwatering or root rot; reduce watering and ensure proper drainage. For severe root rot, remove the plant, trim affected roots, and repot in fresh, dry soil. Pests such as mealybugs, scale insects, or spider mites can occasionally affect the plant; isolate the affected plant and treat with rubbing alcohol or insecticidal soap.