Ice plant is a common name for many genera and species but two of the most popular genera known for their brightly colored flowers are the perennials Lampranthus and Delosperma. The name ice plant derives from tiny hairs on the plant’s leaves and stems that reflect light in a way that resembles ice crystals.
Delosperma cooperi, the trailing Iceplant, hardy iceplant or pink carpet, is a dwarf perennial plant native to South Africa. The leaves are small, cylindrical, and succulent, giving the plant a cushion-like appearance. The leaves often have a slightly iridescent or frosted look, particularly in bright light, which contributes to its common name.
It forms a low-growing mat, with stems that spread out, reaching a height of 3-6 inches and spreading up to 2 feet or more in width. Delosperma cooperi produces brilliant, daisy-like flowers that come in shades of pink, purple, magenta, or even yellow in some cultivars. Each flower has a center of yellow stamens surrounded by a ring of bright petals.
Ice plants are cold-sensitive, but many types are evergreen in warm, dry regions. While not considered highly invasive, its ability to spread can sometimes lead to it becoming too vigorous in certain landscapes. Ice Plants are relatively resistant to pests and diseases. However, they can be susceptible to mealybugs and root rot if overwatered.
Several varieties of Ice Plants are available with varying flower colors and growth habits.
Uses of Ice Plant
- Ideal for rock gardens, slopes, or as a border plant where its spreading nature can fill in gaps and prevent soil erosion.
- Works well in pots or hanging baskets where its trailing growth habit can be showcased, especially in sunny locations.
- Perfect for water-wise gardens where its low water needs and vibrant flowers add color without high maintenance.
- Can be used to create colorful borders around pathways or flower beds.
Cultivation & Care
- Prefers well-drained soil. Sandy or gravelly soils are ideal, but it can adapt to various conditions as long as the soil isn’t waterlogged.
- Thrives in full sun, needing at least 6 hours of direct sunlight daily for best flowering.
- Drought-tolerant once established, which makes it excellent for xeriscaping. It should be watered deeply but infrequently, allowing the soil to dry out between waterings to prevent root rot.
- Typically hardy in USDA zones 5-9, but can tolerate colder conditions with some protection or in milder winter conditions.
- While it’s generally cold-hardy, providing a layer of mulch or covering it during the harshest winter months can help in colder zones.
- Generally does not need heavy fertilization. However, a light application of a balanced, slow-release fertilizer in early spring can boost growth and flowering.
- Best planted in spring after the last frost or in fall, allowing the plant to establish roots before extreme temperatures.
Division and Propagation
- Take stem cuttings in spring or summer. Allow cuttings to callous over for a day or two before planting in well-draining soil.
- Can be divided in spring or early fall. This method not only propagates the plant but also rejuvenates older, crowded clumps.