Repotting guide
When & how to repot Lithops (Lithops)
Also called living stones, pebble plants, flowering stones.
About Lithops
Lithops · also called living stones, pebble plants · houseplant
Lithops are extreme succulents from southern Africa that look like pebbles, with two fused leaves and one annual flower. They need a very strict watering cycle tied to their growth seasons and are easy to kill by watering at the wrong time. Pet-safe.
Lithops ('living stones') are South African mesemb succulents that mimic surrounding pebbles for camouflage; each plant is a single pair of fused leaves with a central slit housing the meristem, an extreme adaptation to arid quartz and gravel flats.
Requires an extremely gritty, mineral, fast-draining mix (sand/grit-heavy, low organic content) reproducing the desert quartz fields it inhabits; rich or retentive compost causes rot and splitting.
Mature size: 2-4 cm across
Sources: hort.extension.wisc.edu, savvygardening.com
How to tell lithops needs repotting
Repotting on a calendar is less reliable than reading the plant. For lithops, watch for these signs:
- Roots growing out of the drainage holes, or the rootball lifting the plant proud of the rim.
- Soil that has shrunk away from the pot sides and no longer holds water.
- The pot is unstable because the plant has grown top-heavy.
- Old, compacted, broken-down mix that stays wet too long — for a succulent that is a rot risk, so refresh it even if the pot size is fine.
For the underlying biology of a pot-bound root system and why it stalls a plant, see our guide to spotting and fixing a root-bound plant.
How often to repot lithops
Every 2–3 years, into bone-dry mix. Lithops's growth habit — pair of fused leaves at soil level — sets the pace. Lithops are extreme succulents from southern Africa that look like pebbles, with two fused leaves and one annual flower. They need a very strict watering cycle tied to their growth seasons and are easy to kill by watering at the wrong time. Pet-safe.
What size pot to step lithops up to
Use a pot only one size up — or even the same pot with fresh gritty mix if the roots have room. Lithops stores water and rots in a large pot of slow-drying soil. A tight terracotta pot that dries fast is far safer than a generous plastic one. Never up-pot a succulent by several sizes.
Not sure of the exact diameter? Our pot size calculator takes the current pot and root spread and tells you the right next size — it deliberately recommends a single step up, never a big jump.
The best time of year to repot lithops
Spring or summer, while lithops is in active growth and warm, is best — roots recover fastest then, and the plant is not sitting in cool damp soil. Avoid repotting a succulent in winter dormancy.
Step-by-step: repotting lithops
- Repot dry. Do not water lithops for several days first. Working with dry roots and dry mix dramatically lowers the rot risk for a succulent.
- Pick a snug, fast-draining pot. Choose terracotta one size up at most, with a drainage hole. Have gritty extremely gritty mineral mix ready.
- Tip it out and clean the roots. Slide the plant out, crumble off the old soil, and trim any black, mushy or dead roots with clean snips.
- Pot into dry mix. Set lithops at its original depth in dry gritty mix, firming gently. Do not bury the stem deeper than it was.
- Wait a week before watering. Leave it completely dry and out of harsh sun for about 7 days so any damaged roots callus. Only then water lightly.
Aftercare
Keep lithops completely dry and out of fierce sun for about a week so any nicked roots callus before they meet moisture; watering a freshly repotted succulent is the classic way to rot it. Then resume the normal lean, dry rhythm. Do not fertilise for about 3 weeks — fresh mix already carries nutrients and feeding freshly disturbed roots scorches them.
The right soil mix for lithops
Lithops wants extremely gritty mineral mix. Cactus mix cut 1:1 or 1:2 with pumice, perlite, or coarse sand. Lithops rot in regular potting soil. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.
Repotting lithops — frequently asked questions
How often should you repot lithops?
Every 2–3 years, into bone-dry mix for lithops. Repot lithops every 2–3 years into a snug pot of extremely gritty mineral mix, ideally in spring or summer. Let it sit in dry soil and do not water for about a week afterwards so any nicked roots can callus. Over-potting and watering straight away is what rots succulents.
What size pot does lithops need?
Use a pot only one size up — or even the same pot with fresh gritty mix if the roots have room. Lithops stores water and rots in a large pot of slow-drying soil. A tight terracotta pot that dries fast is far safer than a generous plastic one. Never up-pot a succulent by several sizes. Use our pot size calculator to size it from the plant's current pot and root spread.
When is the best time of year to repot lithops?
Spring or summer, while lithops is in active growth and warm, is best — roots recover fastest then, and the plant is not sitting in cool damp soil. Avoid repotting a succulent in winter dormancy.
Should you water lithops after repotting?
No — not straight away. Repot lithops into dry mix and wait about a week before the first watering so any damaged roots callus over. Watering a freshly repotted succulent is the single most common way to rot one.
Should you fertilise lithops after repotting?
Not immediately. Wait about 3 weeks after repotting lithops. Fresh mix already contains nutrients, and feeding freshly cut or disturbed roots burns them. Resume your normal feeding routine once you see new growth.
Related guides
- Lithops care — light, water, soil and common problems
- How often to water lithops — the watering brief
- How to repot a plant — the complete step-by-step method
- Root-bound plant — how to spot and fix it
- Pot size calculator — size the next pot correctly
- When & how to repot snake plant
- When & how to repot dracaena
- When & how to repot peperomia
- All 200 repotting guides in the Growli library