If you love vygies and waterwise gardening, Delosperma is one of those genera that quickly becomes addictive. These are mostly low, mat-forming succulents in the Aizoaceae, famous for their shimmering “ice” cells on the leaves and stems that catch the light like tiny crystals – a clever way of reflecting harsh African sun while storing precious moisture.

The genus is centred in southern Africa, with the bulk of species in South Africa and Lesotho, but stretching north into eastern Africa as far as Ethiopia and even into the Arabian Peninsula. Many are local endemics tied to specific rock types or mountain systems – from arid Karoo flats and grassland dolerite outcrops to subalpine Drakensberg cliffs. Seed capsules are typically hygrochastic: they open when wet, using little “valves” and wings to present or flick out the seed in rain – exactly the kind of detail that makes them fascinating subjects for a seed-focused collector.

In the garden, Delosperma species are valued for their carpets of daisy-like flowers in intense shades of magenta, pink, purple, yellow and orange, often over a very long season. Given full sun and sharply drained, sandy or gravelly soils, many species are remarkably drought tolerant and need little more than occasional watering once established. They are ideal for rockeries, retaining walls, containers, green roofs and banks where a tough, colourful, pollinator-friendly groundcover is needed.

For a succulent enthusiast in South Africa, Delosperma offers a huge palette of local biodiversity – from tiny, niche endemics to showy garden workhorses – all fitting neatly into the broader push toward waterwise, climate-resilient gardening.

Delosperma karrooicum – Karoo Ice Plant

The Karoo Ice Plant, Delosperma karrooicum, is a classic succulent of the semi-arid Karoo landscapes, occurring on stony flats, shale slopes and gravel ridges. It forms tight tufts or spreading mats of succulent leaves that store moisture efficiently for survival through long dry spells. Its muted, grey-green foliage blends beautifully into Karoo-style plantings.

When in bloom, D. karrooicum produces bright, daisy-like flowers in warm tones—often pink, white, magenta or yellow—transforming dry veld patches into glowing carpets. Blooming typically peaks in spring and summer, especially after good rainfall or deep irrigation. Its compact growth habit keeps the plant tidy even when not flowering.

For South African gardeners designing true Karoo-inspired gardens, D. karrooicum is indispensable. It thrives in full sun, shallow stony soils, raised beds and gravel terraces. It despises winter wet and heavy clay but loves heat and air movement. From seed it is quick and forgiving: simply surface-sow on a gritty mix, supply bright light and allow the seedlings to dry slightly between waterings. The result is a tough, authentic Karoo vygie that requires almost no care.