Delosperma invalidum (N.E.Br.) H.E.K.Hartmann
Delosperma invalidum, also known as the Invalid Ice Plant, is a succulent plant species that belongs to the family Aizoaceae. It is native to South Africa, specifically in the Eastern Cape Province.
Common Names
Aside from Invalid Ice Plant, Delosperma invalidum is also known by its Afrikaans name “Ongeldige Ijssie” and its isiXhosa name “Upholile”.
Uses
Delosperma invalidum is primarily cultivated for its ornamental value. Its colorful flowers and succulent leaves make it a popular addition to rock gardens, as well as in pots and hanging baskets. It is also known for its ability to tolerate drought and heat, making it a good choice for xeriscaping. In traditional medicine, the plant is believed to have anti-inflammatory properties and is used to treat certain ailments like rheumatism and headaches.
General Appearance
Delosperma invalidum is a small, low-growing succulent that typically reaches only up to 15cm in height. It has thick, fleshy leaves that are green to bluish-green in color, forming a compact rosette. The flowers are bright pink and daisy-like, with yellow centers. They bloom continuously throughout the summer months, adding a burst of color to any garden.
Light Requirements
Delosperma invalidum grows well in full sunlight to partial shade. Generally, it prefers more sunny locations to bloom, and the intensity of the sun can influence the color of the flowers.
Temperature Range
This plant can tolerate dry summers and cold winters. It can grow in USDA hardiness zones ranging from 6a to 9b. D. invalidum loves heat, but it can also withstand extreme cold temperatures as low as -10°F (-23°C).
Soil Type
D. invalidum prefers sandy or loamy soil. The soil must have good drainage, so the plant does not sit in waterlogged soil. Adding organic matter to the soil, such as peat moss or compost, will help with water drainage and fertility of the soil. This plant also tolerates slightly alkaline soil, and pH values in the range of 6.0 to 8.5 are optimal.
Cultivation of Delosperma invalidum (N.E.Br.) H.E.K.Hartmann
Delosperma invalidum (N.E.Br.) H.E.K.Hartmann thrives in well-draining soil that is nutrient-rich. It is best to plant the seeds or cuttings 2-3 inches deep into the soil and with a spacing of 12-18 inches apart. This plant is best cultivated in locations with full sunlight, with temperatures ranging from 60 to 75°F.
Watering Needs of Delosperma invalidum (N.E.Br.) H.E.K.Hartmann
The Delosperma invalidum (N.E.Br.) H.E.K.Hartmann plant requires average watering. Watering once a week is sufficient for this plant, especially during the summer season. It is important always to keep in mind that this plant cannot tolerate being overwatered, and its soil must have proper drainage.
Fertilization
When it comes to fertilizing Delosperma invalidum (N.E.Br.) H.E.K.Hartmann, high nitrogen fertilizers are a no-go. Instead, opt for a low-nitrogen fertilizer, such as a 5-10-5 ratio fertilizer. It would be best to fertilize the plant during the growing season, preferably in the spring season and summer and not in the winter season.
Pruning
Delosperma invalidum (N.E.Br.) H.E.K.Hartmann is a low-growing plant and doesn't require pruning often. However, when pruning is necessary for shaping, it's best to trim the edges after flowering or when the plant is dormant during the winter season. This helps encourage new growth and keeps the plant looking neat and tidy. Always use clean, sharp pruning shears to avoid damaging the plant.
Propagation of Delosperma invalidum
Delosperma invalidum (N.E.Br.) H.E.K.Hartmann, commonly known as Ice Plant, is a succulent plant that originates from South Africa. It is a hardy plant that produces daisy-like flowers and is suitable for rock gardens and ground covers.
Propagation by Cuttings
The easiest and most common method of propagating Delosperma invalidum is by stem cuttings. The best time to take the cuttings is during the growing season, which is in late spring and early summer.
To propagate by cuttings, select a healthy stem to cut. Use a sharp knife or pruner to make a clean cut at a 45-degree angle. Cuttings should be about three inches long and contain at least two leaves. Once cut, allow the plant to dry in a shaded spot for a day or two.
Once dried, dip the cut end of the stem in rooting hormone and plant it in moist soil about an inch deep. Keep the soil moist by regularly watering the plant. Rooting should occur within a few weeks.
Propagation by Division
Propagation by division is another method for propagating Delosperma invalidum. This method is best done in the spring when the plant is actively growing.
To propagate by division, carefully dig up the plant and gently separate the root ball into two or more sections. Each section should have an equal number of stems and roots.
Once separated, replant each section into its pot or planting location. Water the newly planted divisions thoroughly.
Propagation by Seed
Delosperma invalidum can also be propagated by seed. However, it is a less common method as it is more time-consuming and requires more patience and care.
To propagate by seed, start by collecting seeds from the plant's dried flowers. Sow the seeds in an appropriate starting mix of soil. Maintain a consistent temperature of 70°F (21°C) and keep the soil moist. Germination should occur in about 2-3 weeks.
Once the seedlings are large enough, gently transplant them into their own small pots. Be careful not to disrupt the delicate root system.
Regardless of the propagation method chosen, it is important to give the new plants ample light, warmth, and water as they establish themselves. Delosperma invalidum is a hardy and easy to propagate plant that should thrive with proper care and attention.
Disease and Pest Management for Delosperma invalidum
Delosperma invalidum is a resilient plant that is not usually affected by pests or diseases. However, like every plant, it can face some challenges. Here are some common diseases and pests that might affect the plant and ways of managing them:
Pests
Aphids: These small insects suck the sap from the leaves, which causes discoloration, stunting, and distorted growth. To control aphids, remove affected leaves or spray frequently with an insecticidal soap. You can also introduce natural aphid predators such as ladybugs and lacewings.
Spider mites: These tiny, eight-legged arachnids attack the bottom of the leaves, causing yellowing and leaf drop. To control spider mites, spray the plant with a jet of water or use a suitable insecticide. Make sure that the plant is well-watered and avoid fertilizers with a high nitrogen content, as it can encourage mites' growth.
Diseases
Root rot: This fungal disease is caused by overwatering the plant. The roots become brown and mushy, preventing the plant from absorbing water and nutrients. To avoid root rot, make sure that the soil is well-draining, and allow the top layer to dry before watering again. You can also use a fungicide to control the disease.
Leaf spot: This fungal disease appears as small, black spots on the leaves, which later merge and turn yellow. To control leaf spot, remove affected leaves and avoid watering the plant overhead. You can also use a fungicide spray to control the disease.
In conclusion, Delosperma invalidum is a plant that can resist most pests and diseases. Maintaining good cultivation practices, including proper watering, resolving overgrowth, and pruning, can help prevent issues. However, if your plants are infected by pests or diseases, it's essential to identify them early and take action immediately.
