Living stones (Lithops lesliei) care

Succulents & cacti · fussy to keep

Living stones (Lithops lesliei) wants full sun, four to six hours. Water it monthly. Far less often than the reminder suggests, and only at the right point in the year. Lithops follow a strict cycle: water lightly in autumn and again in spring, and give them nothing at all through winter while a new pair of leaves is absorbing the old pair. Watering during that changeover is the standard way people kill them. Pot it in very gritty cactus compost. A weak cactus feed two or three times over the summer, and repot every 3 years. Humidity: indifferent; dry air is ideal. Non-toxic to cats and dogs.

Living stones: a pair of fused leaves flush with the ground, patterned to look like the pebbles around them. Each year the plant absorbs the old pair of leaves to grow a new one, and watering during that changeover is the standard way people kill them. It is the most specific watering regime in this catalogue and the most unforgiving.

Quick facts

Water: Water monthly. Far less often than the reminder suggests, and only at the right point in the year. Lithops follow a strict cycle: water lightly in autumn and again in spring, and give them nothing at all through winter while a new pair of leaves is absorbing the old pair. Watering during that changeover is the standard way people kill them.
Light: Full sun, four to six hours.
Humidity: Indifferent; dry air is ideal.
Soil: Very gritty cactus compost.
Feeding: A weak cactus feed two or three times over the summer.
Repotting: Repot every 3 years.
Toxic to pets: Non-toxic to cats and dogs.
Difficulty: Fussy.
Mature size: 2–4 cm across.
Native to: South Africa.

Watering a Living stones

Water monthly. Far less often than the reminder suggests, and only at the right point in the year. Lithops follow a strict cycle: water lightly in autumn and again in spring, and give them nothing at all through winter while a new pair of leaves is absorbing the old pair. Watering during that changeover is the standard way people kill them.

That cadence is the one PlantParlour sets for this species when you name it, and it is deliberately on the cautious side — a plant that asks a day early is safer than one that asks a day late. Log each watering and the reminder moves with the plant rather than with the calendar.

Light

Full sun, four to six hours of it. In the wild only the flat translucent window on top of each leaf shows above the gravel, and the plant lives on the light that comes through it — give it less and it stretches upward into a soft pale column that never recovers its shape.

Humidity and temperature

Indifferent; dry air is ideal. Central heating in winter is what turns a comfortable room into a dry one, and it is the usual reason an established plant suddenly browns at the edges or picks up spider mites.

Soil and potting

Cactus compost with at least half grit or pumice, in a terracotta pot. Drainage is the entire discipline with cacti.

Feeding

A weak cactus feed two or three times over the summer. Stop feeding in autumn and start again when you see new growth in spring — feeding a plant that isn't growing just builds up salts in the pot.

Repotting

Repot every 3 years. Every four or five years at most, into a deep narrow pot — the taproot is long.

Common problems

Split, burst or mushy body
Watered during the dormant period or during the leaf change.

Fix: Stop watering completely until the old leaves are dry papery shells.
Stretching upward into a column
Not enough light.

Fix: Move it into full sun; this does not reverse.
Old leaves not drying up
Watered too early in the cycle.

Fix: Withhold water entirely and let the new pair draw the old one down.

Propagation

From seed, or by dividing a clump that has split into several heads.

A cutting taken in PlantParlour keeps its link to the plant it came from, so a propagation years later still traces back to the mother plant — which is the point if you ever sell or trade it.

Toxicity and safety

Non-toxic to cats and dogs.

Questions people ask

When should I water lithops?

Only in autumn and spring, and only lightly. From late autumn through to when the old pair of leaves has shrivelled to a dry papery shell — usually late spring — give it nothing at all. Watering during the leaf change makes the plant split or rot, and it is the single most common way they die.

How often should you water a Living stones?

Water monthly as a starting point — that is the cadence PlantParlour sets for Lithops lesliei. Far less often than the reminder suggests, and only at the right point in the year. Lithops follow a strict cycle: water lightly in autumn and again in spring, and give them nothing at all through winter while a new pair of leaves is absorbing the old pair. Watering during that changeover is the standard way people kill them. Light, pot size and the time of year all move that number, so treat it as a reminder to go and check rather than a rule.

How much light does a Living stones need?

Is Living stones toxic to cats and dogs?