Origin and Common Names
Delosperma dolomiticum Van Jaarsv., commonly known as the Dolomite ice plant, belongs to the family Aizoaceae. It is endemic to the Dolomite Mountains in South Africa and was first described by Ernst F. van Jaarsveld in 1994.
General Appearance
Delosperma dolomiticum is a small, compact, and perennial succulent that grows up to 10 cm tall and 30 cm wide. It has fleshy, cylindrical, and light green leaves that are about one inch long, and they grow in opposite pairs along the stems. The plant blooms in the summer and produces vibrant magenta flowers that are two inches in diameter. The flowers have a sweet, nectar-like fragrance and are incredibly attractive to bees and butterflies.
Uses
Delosperma dolomiticum is commonly used in rock gardens, containers, and as ground cover. It requires well-draining soil and full sun exposure to thrive and can withstand periods of drought, making it an excellent choice for low-water-use landscapes. The plant is also deer-resistant and can tolerate a wide range of soil types, including acidic, alkaline, sandy, and loamy soils. The unique appearance and hardiness of Delosperma dolomiticum have made it a favorite among gardeners and landscapers alike.
Light Requirements
Delosperma dolomiticum Van Jaarsv. requires full sun to thrive and perform best. The plant is highly tolerant of heat and drought conditions.
Temperature Requirements
The plant has a preference for cooler temperatures below 60°F (15.5°C), although it can tolerate freezing temperatures. The plant does not like hot and humid conditions and does best in cooler temperatures.
Soil Requirements
The plant thrives in well-draining soil that is moderately fertile. The soil should have good drainage, as the plant does not tolerate waterlogged conditions. It prefers a soil pH level of 6.5-7.5, but can tolerate more acidic soils.
Cultivation Methods
Delosperma dolomiticum Van Jaarsv., also known as hardy ice plant, is a low-growing perennial succulent that is perfect for rock gardens or as ground cover. It is native to South Africa and has adapted to hot, dry conditions so it is best grown in well-drained soil and in full sun to light shade. It is an excellent choice for xeriscapes because it is drought tolerant once it is established, and also attracts butterflies and bees to your garden.
You can propagate Delosperma dolomiticum by either seeds or cuttings. Seeds are easy to obtain and take about two weeks to germinate, while cuttings can be taken in late spring or early summer. Cut a stem of about 5 cm with a few leaves and allow the cut end to dry and callous before planting in well-draining soil.
Watering Needs
Although Delosperma dolomiticum is drought tolerant, it still needs watering during the first few weeks after planting until it is established. Once it is established, it only needs watering during long periods of dry weather. Overwatering can cause root rot so it is crucial to ensure that the soil is well-drained. Water the plant deeply and then wait until the soil is dry before watering again.
Fertilization
Delosperma dolomiticum does not require a lot of fertilization. The best time to fertilize is in the spring, when new growth appears. Use a balanced, low-nitrogen fertilizer. Over-fertilization can cause the plant to become leggy and sprawl out of its designated area.
Pruning
Pruning Delosperma dolomiticum is not necessary, but it may be done to maintain the plant's shape or to prevent it from spreading too far. Prune back the foliage after it has finished flowering to encourage bushier growth. Remove any dead or diseased growth to promote healthy growth.
Propagation methods for Delosperma dolomiticum Van Jaarsv.
Delosperma dolomiticum Van Jaarsv., also known as Stonecrop, is a hardy succulent that belongs to the Aizoaceae family. Propagation of Delosperma dolomiticum Van Jaarsv. is an easy and cost-effective way to increase the number of plants. Here are some propagation methods for this plant:
Seeds
Seeds are the most common way to propagate Stonecrop. When propagating via seeds, sow them during early spring in a pot containing well- drained soil. Place the pot in a warm spot that is exposed to sunlight. Keep the soil moist by watering but be careful not to overwater. Seedlings will germinate in a few weeks and once they begin to develop leaves, they can be transplanted outdoors.
Division
Dividing Delosperma dolomiticum Van Jaarsv. is an easy way to propagate the plant. Simply dig up the mother plant and separate the offsets from the main plant. Make sure each offset has roots and replant it in a pot or outdoors in a well-draining soil. Water the plant until it becomes established.
Cuttings
Delosperma dolomiticum Van Jaarsv. can be propagated from stem cuttings. Use a sterilized scissor and make a clean cut on a stem from the mother plant. The cutting should be at least 4 inches long. Allow the cutting to dry for a few days before planting it in a well-draining soil mix. Keep the soil moist but not soaked and place the pot in a bright spot. In a few weeks, cuttings will develop roots and new growth.
Disease and Pest Management for Delosperma Dolomiticum Van Jaarsv.
Delosperma dolomiticum Van Jaarsv., commonly known as stonecrop or ice plant, is a succulent perennial species that hails from the mesic grasslands and rocky slopes of South Africa. While the plant is resistant to drought and heat, it is susceptible to a few diseases and pests that can affect its health and growth. Here are some common issues that can affect Delosperma dolomiticum Van Jaarsv. and the ways to manage them:
Diseases
1. Root Rot: Root rot is a fungal disease that thrives in waterlogged soil. It can cause the plant to wilt, yellow, and eventually die. To prevent root rot, ensure that the soil is well-draining and avoid overwatering. If you suspect root rot, remove the plant immediately and discard the soil. Treat the remaining plants with a fungicide.
2. Leaf Spot: Leaf spot is a fungal disease that causes circular spots on the leaves. The spots can be gray, brown, or black and can merge together to form larger patches. To prevent leaf spot, water the plant at the base, and avoid splashing water on the leaves. Remove infected leaves and discard them. Treat remaining plants with a fungicide.
Pests
1. Aphids: Aphids are tiny insects that suck the sap from the plant, causing the foliage to yellow and wilt. You can prevent aphids by washing the plant regularly with a strong jet of water and not overfertilizing the plant. You can also use insecticidal soap to control the infestation.
2. Mealybugs: Mealybugs are small, white insects that gather in clusters on the plant's stems and leaves. They secrete a sticky substance called honeydew that attracts ants and can cause the plant to become stunted. To control mealybugs, remove them with a cotton swab dipped in alcohol. You can also use a systemic insecticide as a last resort.
By following these preventive measures, you can ensure that your Delosperma dolomiticum Van Jaarsv. plants remain healthy and pest-free.
