Split rock
Pleiospilos nelii
Also called Living granite, Cleft stone and Pleiospilos
Houseplant · Succulents & cactiA pair of fat grey speckled half-spheres with a cleft between them, like a stone somebody split — and a new pair grows from the cleft each year, feeding on the old one. If it has more than two pairs at once you are overwatering it.
Care at a glance
- Ease
- Hard
- Water
- Every 40 daysSoak, then bone-dry — wait until the soil is dry right through — lift the pot, it tells you.
- Light
- Full sun
- Feed
- Not needed
- Humidity
- Very low
- Hardiness
- Indoors, or out for the summer RHS H1C, to 5°C
- Size
- 0.08 m tall · 0.1 m across
- Lifecycle
- Perennial
- Origin
- South Africa
Is it safe for pets and people?
PetsNothing recorded against it
No animal-poison authority lists this plant either way.
PeopleNot checked yet
Nobody has checked this one against a source for us yet, so treat it as unknown rather than safe.
Checked against ASPCA and RHS on 2026-09-21. Where a source says nothing, we say nothing.
A guide, not veterinary or medical advice. If a pet or a person has eaten a plant and you are worried, call your vet or doctor now — don’t wait for signs to appear. Spotted a mistake? Tell us.