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 rileyi

Delosperma rileyi is a smaller vygie named after a collector, found in rocky habitats where it integrates into low shrubland and grassland. It forms compact mats or cushions of fleshy leaves that cling tightly to stony, free-draining soil.

The flowers are classic, narrow-petalled daisies in pink or purple shades, appearing in spring and summer and opening fully in bright light. The compact habit and neat foliage ensure the plant looks attractive even when not in full bloom, especially in close-up plantings.

For South African buyers, D. rileyi is a natural fit for rock gardens, shallow pans, and the lower levels of mixed succulent borders. It responds well to full sun, very gritty soil and careful watering that avoids waterlogging. With its compact growth, it is also a good choice for smaller gardens and courtyard planters.