Lithops verruculosa
| Light | Very bright light; several hours of direct sun, with airflow |
|---|---|
| Water | Very sparingly; keep dry through summer dormancy and after autumn flowering (see Watering) |
| Soil | Gritty, sharply draining mineral mix (see Soil and potting mix) |
| Temperature | Keep above freezing; USDA zones 10–11 |
| Propagation | Seed (primary); occasional division of established clumps |
| Toxicity | Non-toxic to cats and dogs |
Lithops verruculosa is a small clump-forming "living stone" native to the arid interior of South Africa, distinctive within the genus for the fine, wart-like reddish dots that stipple its top surface. Uniquely among Lithops, its flowers are not always the usual white or yellow but can open in shades of orange, pink or coppery salmon, making it a favourite among collectors of the genus.
Description
Like all Lithops, Lithops verruculosa consists of a pair of fused, swollen leaves shaped like a cleft pebble, with most of the plant buried and only the flat-to-domed top faces exposed. The body is greyish to reddish-brown, and its defining feature is the scatter of small raised warts (the "verrucose" texture of the name), often flushed rusty red, across the leaf window and margins. Individual heads are only a couple of centimetres wide, but the species offsets more freely than many living stones, and mature plants build up into small clumps of several heads — a somewhat unusual habit in a genus where many species stay solitary.
Flowers emerge from the fissure in autumn, daisy-like and opening in the afternoon over several days. While white and yellow forms exist, this species is prized for the warm orange and pink-tinted flowers that appear in some clones, notably the well-known cultivar 'Rose of Texas'.
Distribution and habitat
Lithops verruculosa grows in the arid interior of South Africa, in the Northern Cape (Bushmanland), where it is scattered across gravelly, stony ground in low, open Karoo scrub. As with other living stones, the buried body and mottled top faces camouflage the plant among surrounding pebbles, protecting it from both grazing animals and the intense sun of its habitat. Rainfall is low and seasonal, and plants endure long dry periods by drawing on the water stored in their paired leaves.
Cultivation
Lithops verruculosa asks for the same disciplined regime as the rest of the genus: maximum light and a very lean, gritty mix, with watering timed to the plant's natural cycle rather than the calendar. Give it the brightest position you have — a south-facing window or a well-ventilated greenhouse spot — as too little light causes the bodies to stretch and lose their compact form and markings.
The watering rhythm matters more than anything else. Water in spring and again in autumn around flowering, always letting the mix dry out completely in between, and keep the plant bone dry through the heat of summer and the cold of winter. A new pair of leaves forms each year inside the old one, drawing on the previous leaves as it grows; do not water during this leaf change, as the old bodies should shrivel to papery husks. Overwatering, especially out of season, is the quickest way to lose a plant to rot. See Watering and Repotting for general technique.
Propagation
Seed is the usual and most reliable method. Sown on a gritty surface and kept warm and lightly humid, the seed germinates readily, though seedlings are tiny and slow and are best left undisturbed for their first year or two. See Propagation — seed for a full walkthrough. Because this species clumps more readily than most, established plants can also be divided at repotting, teasing rooted heads apart and allowing the cut surfaces to dry before potting up (see Propagation — offsets).
Cultivars
The best-known selection is 'Rose of Texas', a form grown for its clear rose-pink flowers, which stand out in a genus dominated by white and yellow blooms. Colour and warty patterning vary between seed lines, and growers select for the reddest dots and the warmest flower tones.
Common problems
- Rot — nearly always from watering during dormancy or the annual leaf change, or from a mix that holds too much moisture; the body goes soft, translucent and collapses.
- Etiolation — too little light makes the heads elongate upward and lose their tight, pebble-like shape and markings.
- Failure to renew — extra water during leaf change can leave the plant carrying several sets of leaves at once (stacking), weakening it over time.
- Pests — mealybugs can hide in the fissure and among clumped heads, and root mealybugs sometimes infest the roots (see Pests and diseases).
See also
- Lithops — the genus overview
- Soil and potting mix · Watering · Propagation — seed · Propagation — offsets · Repotting