Repotting guide

When & how to repot Dorothy's Living Stone (Lithops dorotheae)

Also called Dorothy's Pebble Plant, Living Stone, Pebble Mimicry Plant.

More about dorothy's living stone

About Dorothy's Living Stone

Lithops dorotheae · also called Dorothy's Pebble Plant, Living Stone · houseplant

Lithops dorotheae is one of the most prized living stones from Northern Cape, South Africa, featuring pale yellow to cream leaf pairs with a beautifully detailed network of darker lines on the windowed surface. It produces yellow flowers in late summer. Strict adherence to its annual dry-rest cycle is essential. Lithops are listed as non-toxic to pets by the ASPCA.

Mature size: 2-4 cm tall; 2-3 cm wide per leaf pair

Watch for — Etiolation: Stretching and colour loss in low light. L. dorotheae particularly requires very strong direct light to maintain its compact form and attractive leaf pattern.

How to tell dorothy's living stone needs repotting

Repotting on a calendar is less reliable than reading the plant. For dorothy's living stone, 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 dorothy's living stone

Every 2–3 years, into bone-dry mix. Dorothy's Living Stone's growth habit — solitary stemless mesemb succulent — sets the pace. Lithops dorotheae is one of the most prized living stones from Northern Cape, South Africa, featuring pale yellow to cream leaf pairs with a beautifully detailed network of darker lines on the windowed surface. It produces yellow flowers in late summer. Strict adherence to its annual dry-rest cycle is essential. Lithops are listed as non-toxic to pets by the ASPCA.

What size pot to step dorothy's living stone up to

Use a pot only one size up — or even the same pot with fresh gritty mix if the roots have room. Dorothy's Living Stone 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 dorothy's living stone

Spring or summer, while dorothy's living stone 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 dorothy's living stone

Repot dry. Do not water dorothy's living stone 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 mineral cactus mix: 50% cactus compost, 50% coarse grit 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 dorothy's living stone 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 dorothy's living stone 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 dorothy's living stone

Dorothy's Living Stone wants mineral cactus mix: 50% cactus compost, 50% coarse grit. An ultra-free-draining mix mimicking the quartz gravel fields of the Northern Cape. Use horticultural grit or perlite to cut standard cactus compost. Top-dress with quartz chips or fine stone for aesthetic effect and surface drainage. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting dorothy's living stone — frequently asked questions

How often should you repot dorothy's living stone?

Every 2–3 years, into bone-dry mix for dorothy's living stone. Repot dorothy's living stone every 2–3 years into a snug pot of mineral cactus mix: 50% cactus compost, 50% coarse grit, 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 dorothy's living stone need?

When is the best time of year to repot dorothy's living stone?

Should you water dorothy's living stone after repotting?

No — not straight away. Repot dorothy's living stone 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 dorothy's living stone after repotting?

Not immediately. Wait about 3 weeks after repotting dorothy's living stone. Fresh mix already contains nutrients, and feeding freshly cut or disturbed roots burns them. Resume your normal feeding routine once you see new growth.