Aloinopsis luckhoffii
| Light | Bright light to a few hours of direct sun; grows in the cooler months |
|---|---|
| Water | Sparingly, mostly in autumn to spring; keep dry through hot summer dormancy |
| Soil | Very gritty, fast-draining mineral mix (see Soil and potting mix) |
| Temperature | Keep above freezing; happiest in cool, frost-free conditions (roughly USDA zones 9b–11) |
| Propagation | Seed; occasionally division of clumps |
| Toxicity | Not known to be toxic to cats or dogs |
Aloinopsis luckhoffii is a small, clump-forming mesemb from the winter-rainfall region of South Africa, grown for its stubby, wart-covered leaves and comparatively large, satiny flowers. The blunt, spoon-shaped leaves are a chalky grey-green, edged and tipped with prominent pale teeth that give the plant a rough, encrusted look, while the salmon to coppery-yellow flowers open in the cooler part of the year. Like other members of the genus Aloinopsis, it sits low to the ground over a thick, tuberous root.
Description
Aloinopsis luckhoffii forms tight little rosettes or small clumps of thick, fleshy leaves, each only a couple of centimetres long. The leaves are broadest and rounded toward the tip and taper to the base; their upper surface is flattened while the underside is keeled, and the whole leaf is a dull, farinose grey to grey-green. What sets the species apart is the covering of raised warts and the ring of chunky, cartilaginous teeth along the leaf margins and tip — a texture that helps it blend into gravelly ground.
Below the surface the plant develops a swollen, tuberous rootstock that stores water and nutrients through drought. The flowers are relatively showy for so small a plant: solitary, daisy-like mesemb blooms in shades of salmon, apricot and coppery-yellow, often with a darker midstripe on the petals, opening in the afternoon during the cool season.
Distribution and habitat
The species is native to the arid, winter-rainfall region of western South Africa. It grows in open, exposed ground among quartz gravel and stony flats, where the low rosettes contract into the soil and the tuberous roots ride out long dry spells. Rain there falls mainly in the cooler months, which is why the plant does most of its growing in autumn, winter and spring rather than summer.
Cultivation
Aloinopsis luckhoffii is an undemanding little plant provided its natural rhythm is respected. Grow it in a very gritty, mostly mineral mix in a pot deep enough to accommodate the tuberous root, and give it as much bright light as you can — full sun in gentle climates, with only the harshest summer sun softened. It is a cool-season grower: water it through autumn, winter and spring whenever the mix has dried out, and keep it largely dry during its summer rest to avoid rot.
Many growers keep the swollen root buried while the plant is young and only raise it above the soil for display once the plant is well established. See Watering and Repotting for general technique. The plant tolerates light frost if kept bone dry, but is safest protected from freezing.
Propagation
Seed is the usual and most reliable method. Sow the fine seed on the surface of a gritty, well-drained mix and keep it lightly humid and cool until the tiny seedlings appear; they are slow at first but undemanding once past the earliest stage. Established clumps can sometimes be divided, each division ideally carrying a portion of the tuberous root. See Propagation — seed and Propagation — offsets for fuller walkthroughs.
Common problems
- Rot — the most frequent cause of loss, almost always from watering during the summer rest or from a mix that holds too much moisture around the tuberous root.
- Etiolation — too little light makes the rosette loose and pale and softens the characteristic warty, toothed texture.
- Pests — mealybugs (white fluff among the leaves and on the roots) and the occasional spider mite are the usual offenders; see Pests and diseases.
See also
- Aloinopsis — the genus overview
- Soil and potting mix · Watering · Repotting · Propagation — seed · Propagation — offsets