Lithops Lithops spp.

Reviewed June 2026 · how we check this

Living stones — tiny South African succulents that mimic the pebbles of their native desert, each plant a pair of fused, fleshy leaves split by a central fissure. They demand almost no water, reward patience with surprising daisy-like flowers, and punish overwatering instantly.

Light

Lithops are desert plants that crave the strongest light you can give them — at least 4–5 hours of direct sun a day, ideally an unobstructed south-facing windowsill. Without it, the bodies stretch tall and pale, lose their stone-like markings, and split open unattractively (etiolation). The translucent 'windows' on top of each leaf channel light down into the buried body, so the more light, the more compact and patterned they stay. If you can't supply bright sun, a strong grow light a few inches above them works well. Introduce summer sun gradually, though — a plant moved abruptly from a dim shelf into blazing afternoon sun can sunburn, showing as sunken brown patches on the leaf tops.

Watering

Watering Lithops is about timing, not amount, and follows their growth cycle rather than a calendar. Water moderately in spring and again in fall when they are actively growing, soaking the gritty mix then letting it dry completely before the next drink — roughly every 2–3 weeks. Stop almost entirely in summer dormancy and through winter; a single light watering only if leaves shrivel badly. The cardinal rule: never water while the old leaf pair is reabsorbing into a new one (late winter into spring), or the plant will rot or split. When unsure, don't water — Lithops survive months of drought but die fast in soggy soil.

Soil & potting

Lithops need an extremely sharp-draining, mostly mineral mix — far grittier than standard succulent soil. Aim for at least 50–70% inorganic material: coarse pumice, perlite, crushed granite, or akadama, cut with just a small fraction of cactus mix for trace nutrients. Heavy, water-retentive potting soil is fatal. Use a deep pot to accommodate their surprisingly long taproot, and always one with a drainage hole. A top-dressing of small pebbles around each plant mimics their habitat, keeps the bodies dry at soil level, and reduces rot. Repot only every few years, in early fall, since they resent root disturbance and grow very slowly.

Humidity & temperature

These are arid-climate plants that want dry air and good ventilation — high humidity invites rot and fungal problems, so no pebble trays or humidifiers here. Average to low household humidity suits them perfectly. Keep them comfortably between 65–80°F during the growing seasons; they tolerate brief dips to around 40°F if bone dry, but cold combined with moisture is lethal. Protect them from frost entirely. In summer they appreciate a cooler, ventilated spot to ride out dormancy. A windowsill that gets hot, bright, and dry is far better for Lithops than one that stays cool and damp.

Fertilizing

Lithops are adapted to nutrient-poor desert soils and need almost no feeding — over-fertilizing causes soft, bloated, split-prone bodies. In most cases, skip fertilizer entirely; the small amount of nutrients in a gritty mix is plenty for a year or two. If a plant has been in the same soil for several years and seems weak, you can offer a single, very dilute dose (quarter strength) of a low-nitrogen cactus and succulent fertilizer in early fall at the start of the growing season. Never feed during summer dormancy, during the leaf-swap, or in winter. Less is always more with these slow, frugal little plants.

Pruning & maintenance

Lithops essentially never need pruning — there are no stems to shape and no leaves to remove. The one routine 'grooming' is leaving the old leaf pair completely alone as it withers each year. Each plant naturally replaces its two leaves annually: the old pair shrivels to a papery husk while a fresh pair emerges from the central fissure. Resist every urge to peel or pull that dried husk away, even when it looks dead — it feeds moisture and nutrients into the new body until it's fully spent, and removing it early sets the plant back or exposes it to rot. Once it's a thin, fully dry paper, it can be gently brushed off.

Propagation

Lithops are most reliably grown from seed, which is how collectors build variety, though it takes patience — seedlings stay pea-sized for the first year or two. Sow fresh seed on the surface of a gritty mix in late summer or fall, keep it lightly moist and warm until germination, then ease off water as they establish. Mature clumps can sometimes be divided: a clustering plant pulled apart so each division keeps its own roots, replanted in dry grit and left unwatered for a week to callus. Single leaves will not root — unlike many succulents, a Lithops leaf cannot regenerate a whole plant on its own.

Common problems

Mushy or rotting bodyAlmost always overwatering or watering at the wrong time in the cycle.→Stretched, pale, splitting plantsToo little light — the bodies elongate and lose their stone-like form.→

Through the year

Spring

Active growth as the new leaf pair finishes emerging — once the old husk is fully dry, resume moderate watering, soaking then drying out completely.

Summer

Dormant in the heat. Stop watering almost entirely; give shade from scorching afternoon sun and good airflow, watering only if a plant shrivels severely.

Fall

Second growing season and flowering time. Water moderately, watch for daisy-like blooms from the fissure, and repot now if needed.

Winter

Resting and beginning the leaf-swap. Keep dry and bright; do not water while the old leaves are reabsorbing into the new pair.

Recommended supplies for Lithops

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Haworthia Sempervivum (Hens and Chicks)Sedum (Stonecrop)Ghost Plant

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The complete Succulents & Cacti care library

Every species in one printable, organized reference — side-by-side care, a pet-toxicity table, and a seasonal calendar.

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