Ice plants (Delosperma or Lampranthus) are popular, hardy succulents known for their vibrant, daisy-like flowers and ability to thrive as low-maintenance ground cover. These resilient plants spread readily, making them desirable additions to xeriscapes and rock gardens. Increasing the population of a favorite specimen is a straightforward process achievable through simple horticultural techniques. This guide provides instruction on how to successfully propagate these sun-loving succulents.
Selecting the Best Propagation Approach
The choice of propagation method depends on the gardener’s goal and the existing plant’s maturity. Stem cuttings are the quickest way to create genetically identical clones, ideal for rapidly expanding a specific cultivar. This approach uses small sections of existing growth to establish new individuals.
Division becomes an option when a mature ice plant has formed a dense mat of growth over several seasons. Separating these clumped sections rejuvenates an older plant while simultaneously yielding several large new plants. Seeds offer a third path, primarily used when the goal is to produce large numbers of plants or to breed new hybrid varieties.
Step-by-Step Guide to Stem Cuttings
The optimal time for taking stem cuttings is during the spring or early summer when the plant is in its active growth phase. Select healthy, non-flowering stem tips, as they contain the most energy for root development. Using a clean, sharp blade, cut a segment approximately three to four inches long just below a leaf node.
Remove the lower one-third of the leaves from the cutting to expose the nodes where roots will form and prevent buried foliage from rotting. The curing process allows the wound to dry out and form a protective callus. Place the prepared cuttings in a dry, shaded location for two to seven days until the cut end feels completely dry and slightly hardened.
A highly porous, well-draining substrate, typically a mix of potting soil and materials like perlite or coarse sand, is necessary to prevent stem rot. Gently insert the callused end of the cutting into the prepared medium, ensuring the exposed nodes are below the soil surface. Cuttings can be planted directly into individual small pots or spaced a few inches apart in a shallow tray.
After planting, the cuttings should be placed in a location that receives bright, indirect light rather than intense, direct sun. This prevents the small, vulnerable cuttings from becoming stressed by excessive heat or dehydration before they can establish roots. Intense direct sunlight at this stage can quickly desiccate the plant material.
Caring for Newly Propagated Plants
The initial watering regimen must be minimal to avoid rot before roots form. Water the medium thoroughly only after it has become completely dry, waiting several days between applications. Successful root growth, which typically takes two to six weeks, is indicated when the cutting resists a gentle tug.
Once roots are established, the new plants require a slow transition to full sun exposure (hardening off). Gradually increase the duration of direct sunlight over one to two weeks, as an abrupt change can cause severe leaf burn. New leaves that appear tightly clustered and green confirm the plant is receiving adequate light without stress.
Fertilization should be delayed until the plant has established a robust root system, usually several months after propagation. When feeding, use a diluted, balanced liquid fertilizer formulated for succulents at a quarter or half strength. Stretching (etiolation) is a sign the new plant is not receiving enough light and needs to be moved to a brighter location.
Vigilance regarding moisture control is necessary even after establishment, as overwatering remains the primary cause of plant failure. The thick, fleshy leaves of the ice plant store significant water, making it tolerant of drought. Proper care ensures the transition of the propagated material into a permanent, thriving specimen.