Origin
Orbea pulchella, also known as Stapelia pulchella, is a species of succulent plant that belongs to the family Apocynaceae. It is native to Southern Africa, particularly in the regions of Namibia, Botswana, and South Africa.
Common Names
The plant is also commonly known as the "Starfish Flower" or "Carrion Flower" due to its unique star-shaped, fleshy flowers and unpleasant odor that attracts carrion flies for pollination.
Uses
Orbea pulchella is mostly grown as a decorative plant due to its beautiful star-shaped flowers and unique texture. Some people also use this plant for medicinal purposes such as treating diabetes, fever, and snake bites.
General Appearance
The Orbea pulchella is a small, succulent perennial plant that typically grows up to 15 centimeters in height and spreads up to 60 centimeters in width. Its thick, erect, and fleshy stems are covered with tiny, conical, and raised tubercles. These tubercles have small spines on them that tend to be more prominent on the young plants but becomes less evident as the plant ages.
The Starfish Flower, as the plant is commonly referred to, produces gorgeous star-shaped flowers that can measure up to 10 centimeters in diameter. The flowers are usually dark brown or maroon, with white or yellowish spots and a velvety surface. They also have shallow lobes that curve upwards, giving them a unique shape that resembles a starfish. The unpleasant odor that emanates from the flowers attracts carrion flies, which are the plant's natural pollinators.
Light Requirements
Orbea pulchella thrives in bright, indirect light. Direct sunlight can scorch its leaves, so it is best to provide it with filtered or diffused light. This succulent is capable of adapting to lower light conditions, but its growth may be slower and less robust.
Temperature Requirements
Orbea pulchella is a tropical succulent that prefers warm temperatures ranging from 60°F to 85°F (15°C to 29°C). It is not frost-tolerant and cannot survive temperatures below 50°F (10°C) for extended periods. Temperatures above 90°F (32°C) can be stressful to the plant.
Soil Requirements
Orbea pulchella requires a well-draining soil mixture that can provide adequate aeration for its roots. A good mixture can be made by combining equal parts of regular potting soil, perlite, and coarse sand. It is important to avoid using heavy or compacted soil that holds too much moisture, as this can lead to root rot.
Cultivation Methods for Orbea pulchella (Masson) L.C.Leach
Orbea pulchella is a succulent plant native to South Africa, growing in rocky or sandy areas of the arid regions. When cultivating this plant, it is essential to mimic its natural environment and provide it with suitable soil, light, and temperature conditions.
The plant prefers well-drained soil that is enriched with coarse sand, perlite, or gravel for better drainage. It can grow well in semi-shaded or full sun positions but needs protection from intense heat and direct sunlight during the hottest parts of the day.
Orbea pulchella can be propagated from seeds or stem cutting, with stem cutting being the preferred method as it is faster and more successful. Cuttings should be taken in the growing season, preferably in spring or summer, and planted in well-drained soil mixed with sand or perlite.
Watering Needs for Orbea pulchella (Masson) L.C.Leach
As with most succulents, Orbea pulchella requires minimal watering as it is adapted to dry conditions. Over-watering can cause root rot and other diseases, so it is crucial to let the soil dry completely between watering sessions.
The frequency of watering depends on the temperature and humidity level of your location. In hot and dry conditions, the plant may require watering once or twice a week. Still, in colder and more humid climates, it may only need water every two or three weeks.
It is essential to avoid getting water on the leaves and stem of the plant as this can cause rot or fungal infections. Instead, water the soil around the plant slowly and thoroughly.
Fertilization for Orbea pulchella (Masson) L.C.Leach
Orbea pulchella does not require frequent fertilization as it is adapted to grow in nutrient-poor soil. However, providing a balanced fertilizer during the growing season can help promote healthy growth and blooming.
Fertilization should be done once a month during the growing season using a balanced, low-nitrogen fertilizer diluted to half the recommended strength. Avoid fertilizing during the dormant season, which occurs in winter.
It is crucial not to over-fertilize as this can cause fertilizer burn and damage the plant's roots. Always follow the manufacturer's instructions and avoid applying fertilizer to dry soil to prevent root damage.
Pruning for Orbea pulchella (Masson) L.C.Leach
Pruning is not necessary for Orbea pulchella as it has slow growth and does not become too large or untidy. However, removing dead or damaged leaves or stems can help maintain the plant's appearance and health.
When pruning, use a clean, sharp pair of scissors or pruning shears and make clean cuts to prevent damaging the plant. Avoid removing too much foliage at once and make sure to disinfect the cutting tools after use to prevent the spread of diseases.
Propagation of Orbea pulchella (Masson) L.C.Leach
Orbea pulchella (Masson) L.C.Leach, commonly known as Starfish Cactus, is a succulent plant that is native to South Africa. Propagating this plant is relatively easy and can be done through the following methods:
Propagation via Seeds
One of the common propagation methods for Orbea pulchella is through seeds. The seeds should be sown in a well-draining potting mix. It is recommended to use a mixture of sand, perlite, and peat moss in equal portions. The seeds take about 2-4 weeks to germinate and could take up to 2 years to develop into a mature plant.
Propagation via Cuttings
You can propagate Orbea pulchella through cuttings from a mature plant. Cut a stem from the main plant and leave it to dry for a few days. Once the cut is dry, plant the cutting in the well-draining potting mix mentioned above. Keep it in a shaded location until new roots and leaves form. Once root formation is observed, move the plant to a location with partial sunlight.
Propagation via Division
Another propagation method is through division of the plant. If the plant has developed into a clump, it can be divided into separate plants. Pull apart the clump carefully, trying not to damage the roots. Plant each new plant in its own container with the well-draining potting mix.
Disease Management
Orbea pulchella is generally a healthy plant with no significant disease problems. However, it may occasionally become susceptible to fungal infections, particularly if growing conditions are excessively moist. To manage fungal diseases, promptly remove and destroy any affected plant material and reduce the frequency of watering. Fungicide treatments may be necessary if the fungal infection is severe.
Pest Management
Orbea pulchella may occasionally become infested with mealybugs, spider mites, and scale insects. These pests can cause discoloration, wilting, and stunted growth. To manage pest infestations, rinse the plant with a strong stream of water to knock off and remove pests, particularly the mealybugs. For severe infestations, use insecticidal soaps or oils labeled for use on succulent plants. Always follow instructions and recommendations on the product label.
