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 subclavatum

Delosperma subclavatum hints at somewhat club-shaped features, often referring to stems or leaves. It is a low-growing succulent from rocky habitats where it forms clumps or mats of fleshy growth that can take on a slightly clubby appearance at the tips.

The plant produces daisy-like flowers in typical Delosperma fashion, usually in bright, clear colours that contrast well with the green foliage. Flowering is focussed in the warmer months, with blooms opening fully in sun and closing in dull conditions.

For South African gardeners, D. subclavatum is an interesting, textural species for rock gardens, dry terraces and pots. Its slightly unusual growth habit makes it stand out among flatter vygies, and it enjoys the same basic conditions: full sun, free-draining soil and intermittent, deep watering.