Dinteranthus pole-evansii is a distinctive succulent, often called a “living stone” due to its remarkable ability to blend seamlessly with its environment. Its unique appearance and intriguing mimicry of desert rocks captivate succulent enthusiasts. This unusual plant makes a fascinating addition to any collection.
Unique Characteristics and Origin
This species exhibits extraordinary camouflage, mimicking the stones and pebbles of its native habitat. Its thick, fleshy leaves are typically fused into a pair, with a small fissure at the top from which flowers emerge. The coloration of Dinteranthus pole-evansii varies, often displaying shades of gray, brown, green, or reddish hues.
Dinteranthus pole-evansii originates from the arid regions of Southern Africa, found in parts of Namibia and South Africa. It thrives in dry, rocky desert environments, often growing among quartz or granite pebbles. Its succulent leaves store water, allowing it to withstand prolonged periods of drought and intense sun exposure.
Cultivation and Care
Light Requirements
Dinteranthus pole-evansii requires intense, direct sunlight to thrive. A south-facing window providing several hours of direct sun daily is ideal. If natural light is insufficient, supplement with strong grow lights for 12 to 16 hours a day to prevent etiolation, where the plant elongates and loses its compact form.
Watering
Watering this succulent demands a specific approach due to its arid adaptations. Use the “soak and dry” method: thoroughly water until it drains, then allow the soil to dry completely before the next watering. Overwatering often causes root and stem rot. During summer dormancy, significantly reduce or stop watering to prevent rot.
Soil and Potting
Dinteranthus pole-evansii requires an extremely gritty, well-draining medium with minimal organic matter. A suitable blend includes a high proportion of inorganic materials like pumice, perlite, coarse sand, or crushed granite, with a small amount of potting mix. Terracotta pots are preferred as their porous nature helps wick away excess moisture from the soil.
Temperature and Ventilation
Dinteranthus pole-evansii tolerates high daytime temperatures, often 75°F to 90°F (24°C to 32°C), and benefits from cooler nights. It is highly sensitive to frost and requires protection from temperatures below 40°F (4°C). Good air circulation is important to prevent fungal issues, especially in humid conditions or when the soil remains damp.
Fertilization and Dormancy
Fertilization needs for Dinteranthus pole-evansii are minimal. If fertilizing, apply a very diluted, low-nitrogen fertilizer once or twice during its active growing season, typically in autumn or spring. The plant often enters dormancy during the hottest summer months, when growth slows or pauses. During this time, adjust watering and discontinue fertilization.
Propagation
Propagating Dinteranthus pole-evansii can be achieved through two primary methods: seeds or division. Sowing seeds requires a well-draining, gritty substrate and consistent moisture until germination. Seeds need light to germinate, so surface-sow them or cover with a very thin layer of grit. Germination can be slow and sporadic, with seedlings growing gradually and taking several years to reach maturity.
Division is a simpler method for established, clumping plants. Carefully separate offsets or individual heads from the main plant, ensuring each section has its own root system. Allow cut surfaces to dry and callus for a few days before replanting to prevent rot. This method generally results in faster establishment than growing from seed.
Common Problems and Troubleshooting
Rot is a frequent problem, almost always resulting from overwatering or inadequate drainage. If detected, carefully remove affected parts and allow healthy tissue to callus before repotting into fresh, gritty soil.
Insufficient light leads to etiolation, where the plant stretches and loses its compact, stone-like appearance. Move the plant to a brighter location with more direct sun exposure. Etiolated growth will not revert, but new growth will be healthier with improved light.
Shriveling or wrinkling of leaves can indicate normal dormancy or a more serious issue. During dormancy, some shriveling is natural. However, persistent or severe shriveling outside of dormancy, especially when the soil is dry, suggests severe underwatering or root issues. In such cases, a thorough watering may be needed, or inspect roots for damage or rot.
Dinteranthus pole-evansii can occasionally be affected by common succulent pests like mealybugs. These small, white, cottony insects congregate in crevices or at the plant’s base. Use a soft brush or cotton swab dipped in rubbing alcohol to remove individual pests. For widespread infestation, apply an insecticidal soap or systemic insecticide formulated for succulents.