The Deltoid Leaved Dew Plant (Oscularia deltoides or Lampranthus deltoides) is a distinctive succulent known for its aesthetic appeal and ease of care. Its fleshy, angular leaves and vibrant blooms make it a popular choice for gardeners. This low-growing succulent adds beauty to various settings, from rock gardens to container arrangements.
About the Deltoid Leaved Dew Plant
The Deltoid Leaved Dew Plant, also known as Pink Ice Plant, is identified by its scientific names, Oscularia deltoides or Lampranthus deltoides. Its common name comes from its triangular, blue-green leaves, which are fleshy and often have small, reddish teeth along their edges. These leaves can also display a glaucous texture and may become purple-tinged, especially with increased sunlight exposure.
This succulent is native to the southwestern Cape region of South Africa, where it thrives on sandstone rocks in low mountainous areas. Its natural habitat influences its drought-tolerant nature and preference for well-draining soil. The plant grows as a low-spreading shrublet, reaching 6 to 12 inches tall and spreading up to 3 feet wide. In spring and summer, it produces small, almond-scented, daisy-like flowers ranging from lavender-pink to purple with yellow centers.
Caring for Your Deltoid Leaved Dew Plant
Light Requirements
The Deltoid Leaved Dew Plant thrives in bright, direct sunlight, ideally receiving at least six hours daily. This light encourages robust growth, intensifies leaf coloration, and maximizes its flowering potential. While it tolerates partial shade, insufficient light can lead to leggy growth and less prolific blooming. Indoors, place the plant near a south-facing window for necessary light.
Watering Needs
This succulent stores water in its fleshy leaves and stems, making it highly drought-tolerant and susceptible to overwatering. The “soak and dry” method is appropriate: water thoroughly until water drains from the bottom of the pot, then allow the soil to dry out completely before watering again. To check soil moisture, insert your finger about 2-3 inches deep; if it feels wet, delay watering. Watering frequency should decrease during the plant’s dormant period in winter, as excessive moisture can lead to root rot.
Soil and Potting
Well-draining soil is crucial for the Deltoid Leaved Dew Plant, mimicking its native sandy, rocky habitat. A specialized succulent or cactus potting mix is ideal, as it provides the necessary porosity and prevents waterlogging. If creating your own mix, incorporate materials like pumice, perlite, or coarse sand to enhance drainage. Pots must have drainage holes to allow excess water to escape, preventing the roots from sitting in moisture.
Temperature and Humidity
The Deltoid Leaved Dew Plant prefers warm temperatures and exhibits good heat tolerance, thriving in USDA hardiness zones 8 to 11. It can withstand cold temperatures down to approximately 15-23°F, but prolonged exposure to frost can be harmful. In colder climates, it is advisable to bring potted plants indoors or provide protective measures during winter. Low humidity levels are generally suitable for this plant, reflecting its arid origins.
Fertilization
Minimal fertilization is adequate for the Deltoid Leaved Dew Plant, as succulents do not require heavy feeding. Over-fertilizing can negatively impact its health and may promote excessive foliage at the expense of blooms. During the active growing season in spring and summer, a diluted, balanced liquid fertilizer formulated for succulents and cacti can be applied sparingly, perhaps every 4-6 weeks or quarterly. Reduce or cease fertilization entirely during fall and winter.
Propagating Deltoid Leaved Dew Plant
Propagating the Deltoid Leaved Dew Plant is straightforward, with stem cuttings being the most effective and popular method for home growers. Begin by selecting a healthy, plump stem section, ideally 4-6 inches long, and use a clean, sharp knife or shears to make a cut just below a leaf node. Remove any leaves from the lower third of the cutting to prevent rot once planted.
After taking the cutting, allow the cut end to air dry for two to three days until a callus forms; this step is important to prevent fungal infections and rot. Once calloused, plant the cutting about an inch deep in a well-draining succulent or cactus mix. Keep the soil lightly moist until roots develop, which typically occurs within a few weeks. While propagation from seeds is possible, cuttings generally offer a faster and more successful rooting process.
Common Issues and Tips
The Deltoid Leaved Dew Plant is resilient, but issues can arise from improper care. Root rot is a common problem, indicated by wilting or yellowing leaves. This is often caused by overwatering and poor drainage. Ensure well-draining soil and proper watering to prevent it.
Legginess, characterized by stretched stems and sparse foliage, results from insufficient light. Move the plant to a brighter location for more compact growth. Pests such as mealybugs, aphids, and spider mites can affect the plant. Inspect regularly and treat with diluted insecticidal soap or neem oil. Pruning is minimal, mainly to remove dead or damaged growth or maintain shape.