Overview
Rhombophyllum dolabriforme (L.) Schwantes is a succulent plant species belonging to the family Aizoaceae. The plant is native to the southern part of Namibia, and the Northern and Western Cape Provinces of South Africa.
Common Names
Rhombophyllum dolabriforme is commonly known as the "Pickle Plant" due to its resemblance to a pickled cucumber. It is also known as "Hottentot's Bread," "Bread Pincushion," and "Stone Plant."
Appearance
The Rhombophyllum dolabriforme plant grows low on the ground with elongated, fleshy, and almost flattened leaf pairs resembling a pickle. The leaves are grey-green in color and have a distinct cuticle. The plant produces small yellow flowers approximately 2 cm in diameter on long stalks. The plant grows to a height of about 10 cm and spreads out about 20 cm.
Uses
Rhombophyllum dolabriforme is often used for ornamental purposes in gardens, rockeries, and as a pot plant. It is also used traditionally for medicinal purposes in its native region such as to relieve stomach aches, treat wounds, and other ailments.
Light Requirements
Rhombophyllum dolabriforme grows well in bright light conditions. It can tolerate direct sunlight provided that the plant is acclimatized to expose in full sunlight gradually. However, in areas with hot summers, the plant requires partial shading to avoid sunburn.
Temperature Requirements
Rhombophyllum dolabriforme is not cold hardy and cannot withstand temperatures below freezing. The ideal temperature range for the plant growth is between 15°C to 25°C. Ensure that the plant is protected from frost and extreme heat, particularly during the summer season.
Soil Requirements
The plant prefers well-draining soil that is rocky or sandy to provide excellent drainage and aeration. Plant the Rhombophyllum dolabriforme in a mixture of sand, perlite, and coarse gravel. The plant is moderately drought-tolerant, so ensure that the soil is kept dry before the next watering. It is best to water the plant from below, avoiding wetting the leaves and stems.
Cultivation methods
Rhombophyllum dolabriforme (L.) Schwantes, commonly known as stone plants, are native to South Africa and are known for their attractive succulent leaves. These plants are easy to care for and require minimal maintenance. They thrive in bright, direct sunlight and well-draining soil, making them ideal for hot and dry climates. Stone plants can be grown either indoors or outdoors, either as potted plants or in a garden bed.
Watering needs
Stone plants are drought-tolerant and can survive long periods without water. However, it is important to ensure that the soil is completely dry before watering the plant again. Overwatering can lead to root rot and cause the plant to die. During the dormant period, which generally occurs in winter, water the plant sparingly. When watering, pour the water slowly onto the soil to avoid damaging the leaves.
Fertilization
Stone plants do not require frequent fertilization. In fact, too much fertilizer can harm the plant's growth. It is recommended to fertilize the plant only once or twice a year, during the growing season. Use a balanced, water-soluble fertilizer and dilute it according to the instructions on the label. Be careful not to get any fertilizer on the leaves, as it can cause damage.
Pruning
Rhombophyllum dolabriforme (L.) Schwantes typically do not require pruning, as they tend to stay small in size. However, if the plant becomes too tall or leggy, it can be trimmed back with sharp, sterile pruning shears. It is important to cut at an angle to avoid damaging the stem. Remove any damaged or dead leaves using the same method.
Propagation of Rhombophyllum dolabriforme
Rhombophyllum dolabriforme is a type of succulent plant that can be propagated through various methods such as seeds, cuttings, and offsets.
Propagation through Seeds
The easiest and most common way to propagate Rhombophyllum dolabriforme is through seeds. The seeds can be collected once the plant has finished flowering, and they can be sown in a well-draining soil mix. It is advisable to soak the seeds in water for a few hours before planting to increase the chances of germination. Keep the soil moist but not wet and place the container in a warm, sunny location. The seeds can take up to a few weeks to germinate.
Propagation through Cuttings
Propagating Rhombophyllum dolabriforme through cuttings is a straightforward process. Simply cut a stem from the parent plant, making sure to use a sharp, sterilized blade. Let the cutting dry for a few days, and once a callus has formed, plant it in a well-draining soil mix. Water the soil lightly and place the container in a warm, bright spot. The cutting should form roots within a few weeks.
Propagation through Offsets
Rhombophyllum dolabriforme can also propagate through offsets. Offsets are small plants that grow from the parent plant and can be easily removed. Wait until the offsets are big enough to handle, then remove them gently with a clean, sharp knife. Let them dry for a few days, then plant them in a well-draining soil mix. Water the soil lightly and place the container in a warm, bright location. The offsets should root within a few weeks.
Disease Management
Rhombophyllum dolabriforme is relatively resistant to diseases, but it can be affected by fungal infections and viruses.
One of the most common fungal diseases that affect this plant is the black spot disease, which usually appears as circular black spots on the leaves and stems. To manage this disease, it is recommended to remove infected parts of the plant and dispose of them. Also, avoid overhead watering, and ensure the plant is not overcrowded to promote proper air circulation. An organic fungicide can also be used to control the spread of the disease.
If the plant is infected with a virus, there is no cure, and the affected plant parts must be removed and disposed of immediately. As a preventive measure, always use sanitized gardening tools and avoid planting Rhombophyllum dolabriforme near infected plants.
Pest Management
Rhombophyllum dolabriforme is not usually affected by pests, but it can be attacked by mealybugs and aphids.
Mealybugs appear as tiny, white masses on the stems and leaves of the plant. They suck the sap from the plant, causing it to wilt and weaken. To manage mealybugs, isolate the affected plant and remove them manually or use a blast of water to wash them away. You can also use a cotton swab dipped in rubbing alcohol to kill the bugs.
Aphids appear as clusters of tiny green or black insects on the new growth of the plant. They extract the sap from the plant and transmit viral diseases. To prevent aphid infestation, keep the plant healthy by providing adequate nutrition and avoid overwatering. If the plant is already infested, use neem oil or insecticidal soap to control the population.
