The Crassula corymbulosa is a distinctive succulent, recognized for its unique stacked leaves and compact growth. Also known by common names such as “Shark’s Tooth” or “Red Pagoda Plant,” its architectural appearance makes it an appealing choice for houseplant enthusiasts.
Understanding Crassula Corymbulosa
Crassula corymbulosa features thick, fleshy, triangular leaves that overlap and stack densely along its stems, creating a pagoda-like or “shark tooth” appearance. These leaves typically start green but can develop vibrant pink, red, or orange borders, especially when exposed to intense sunlight or cooler temperatures. The plant grows in an upright, sometimes sprawling, manner, reaching heights of approximately 6 to 10 inches. It is native to South Africa, where it thrives on dry, rocky slopes, influencing its preference for specific growing conditions.
Crassula Corymbulosa Care
Light
Crassula corymbulosa requires abundant sunlight to maintain its compact shape and vibrant leaf coloration. Placing it in a south-facing window indoors is ideal, providing at least six hours of direct sunlight daily. While it appreciates bright light, extreme midday sun in hot climates can scorch its leaves, so filtered light during the hottest part of the day is beneficial outdoors. Insufficient light causes the plant to stretch, resulting in leggy, pale growth.
Watering
This succulent has low water requirements, preferring a “soak and dry” watering method. Water the plant thoroughly until water drains from the pot’s bottom, then allow the soil to dry completely before the next watering. Overwatering is a common issue, leading to root rot, while underwatering can cause leaves to shrivel. During cooler months or periods of dormancy, reduce watering frequency significantly.
Soil and Potting
Well-draining soil is crucial to prevent waterlogging and root problems. A commercial succulent or cactus mix works well, or you can create a custom blend using coarse sand, pumice, perlite, or chicken grit to ensure proper drainage. Pots must have drainage holes to allow excess water to escape. Repotting is infrequent, typically every two years during dormancy, into a pot only slightly larger than the previous one.
Temperature and Humidity
Crassula corymbulosa prefers moderate temperatures, between 65-75°F (18-24°C). It can tolerate cooler temperatures, down to 20-25°F (-6.6 to 3.8°C), but should be protected from hard frosts. It does not thrive in high humidity; average indoor humidity levels are suitable. Good air circulation helps prevent fungal issues, particularly in more humid environments.
Fertilizing
Fertilizing Crassula corymbulosa is not always necessary, as they have low nutrient demands. If fertilizing, apply a diluted liquid succulent or cactus fertilizer at half or quarter strength during its active growing season, typically spring and summer. Fertilization supports healthy growth, but avoid over-fertilizing, which can weaken the plant. Do not fertilize during fall and winter when the plant’s growth slows.
Propagating Crassula Corymbulosa
Propagation is straightforward using stem and leaf cuttings. For stem cuttings, select a healthy segment with a few leaf nodes. Allow the cut end to callus for a few days to a week to prevent rot, then plant it in a well-draining succulent soil mix, ensuring the cut end is submerged. For leaf cuttings, gently twist a healthy leaf from the stem, ensuring a small part of the stem remains attached. Allow it to callus before placing it on the soil surface. Provide bright, indirect light and minimal moisture until roots develop, which typically occurs within a few weeks.
Common Issues and Solutions
Etiolation, or stretching, is a common problem, indicating insufficient light; the solution is to move the plant to a brighter location. Root rot often results from overwatering, requiring well-draining soil and allowing soil to dry completely between waterings. If leaves shrivel, it indicates underwatering or extreme heat, requiring an adjustment in watering frequency or location. Common pests include mealybugs and spider mites, which can be addressed with appropriate insecticidal treatments.