Pseudolithos Cubiformis
The Pseudolithos Cubiformis is one of the strangest jewels in the world of succulents. With its perfectly cubic shape, color ranging from olive green to stone brown, and mineral appearance, it intrigues and fascinates alike. This plant literally appears sculpted from rock.
Few plants spark such curiosity: its cubic form is so perfect that it could be mistaken for an artificial object. It is often confused with a stone by beginners. Yet the Pseudolithos Cubiformis is very much alive, and its cultivation requires precision and rigor.
This botanical gem grows very slowly, reaching between 2 and 6 cm per side, and usually remains solitary, without offsets. Its extremely slow growth rate and high sensitivity to moisture make it a plant reserved for experienced growers, but well worth the effort.
The Pseudolithos Cubiformis is native to the semi-desert regions of Somalia, in the Horn of Africa. It grows in rocky and extremely arid environments, camouflaging itself among stones to protect against predators and intense sunlight.
This natural camouflage is the origin of its scientific name, “pseudo-lithos”, meaning “false stone”. In the wild, it benefits from a mineral, poor, and perfectly draining soil, with very intense light exposure.
This natural camouflage is the origin of its scientific name, “pseudo-lithos”, meaning “false stone”. In the wild, it benefits from a mineral, poor, and perfectly draining soil, with very intense light exposure.
To ensure the survival of your Pseudolithos Cubiformis, light exposure must be carefully managed:
🌞 Bright indirect light: ideally placed near a bright window without direct sun during the hottest hours
🌤️ Avoid full direct sun in summer, which may cause burns on the sensitive epidermis of the cube
A lack of light will cause unattractive etiolation and discoloration
🌞 Bright indirect light: ideally placed near a bright window without direct sun during the hottest hours
🌤️ Avoid full direct sun in summer, which may cause burns on the sensitive epidermis of the cube
A lack of light will cause unattractive etiolation and discoloration
The Pseudolithos Cubiformis is one of the succulents most sensitive to moisture:
🌱 Spring / summer: extremely spaced watering, only when the substrate is completely dry deep down. On average once every 3 to 4 weeks
🍂 Autumn / winter: no watering at all. Total dormancy is vital to prevent rot
⚡ Golden rule: it is better to forget to water than to water once too often. Excess moisture is fatal
🌱 Spring / summer: extremely spaced watering, only when the substrate is completely dry deep down. On average once every 3 to 4 weeks
🍂 Autumn / winter: no watering at all. Total dormancy is vital to prevent rot
⚡ Golden rule: it is better to forget to water than to water once too often. Excess moisture is fatal
The Pseudolithos Cubiformis thrives in dry heat:
🌞 Optimal growing temperature: between 25°C and 35°C
❄️ Minimum tolerance: never expose below 10°C. It will die quickly below this threshold
🏠 Wintering: indoors, dry and bright, at a constant temperature between 15°C and 25°C
🌞 Optimal growing temperature: between 25°C and 35°C
❄️ Minimum tolerance: never expose below 10°C. It will die quickly below this threshold
🏠 Wintering: indoors, dry and bright, at a constant temperature between 15°C and 25°C
The Pseudolithos Cubiformis requires an extremely draining substrate:
🪨Highly mineral substrate: mix cactus soil + 50% pumice + pozzolana
💡 You may add coarse sand or perlite for extra aeration
🪨Highly mineral substrate: mix cactus soil + 50% pumice + pozzolana
💡 You may add coarse sand or perlite for extra aeration
The flowering of the Pseudolithos Cubiformis is rare but fascinating:
🌸 Season: late summer to early autumn
🎨 Color: star-shaped flowers, reddish-brown to purple, often malodorous
🕑 Duration: 2 to 4 days
💡 Like many Asclepiadaceae, the flowers may smell like rotting meat to attract pollinating flies
🌸 Season: late summer to early autumn
🎨 Color: star-shaped flowers, reddish-brown to purple, often malodorous
🕑 Duration: 2 to 4 days
💡 Like many Asclepiadaceae, the flowers may smell like rotting meat to attract pollinating flies
FAQ - Pseudolithos Cubiformis
What is the proper substrate for Pseudolithos Cubiformis?
An ultra-draining mix with cactus potting soil, pumice, and pozzolana is essential to prevent rot.
How do I know if my Pseudolithos Cubiformis is receiving too much water?
It becomes soft, changes color (dark brown or black), and collapses. Stop watering immediately.
Does Pseudolithos Cubiformis tolerate indoor conditions?
Yes, provided it is placed in a very bright, dry room without cold drafts.
Can Pseudolithos Cubiformis be fertilized?
Yes, once in spring with a very diluted cactus fertilizer. Avoid any excess.
How to recognize lack of water in Pseudolithos Cubiformis?
The cube retracts slightly and its edges become more visible. A small watering may be sufficient.
What is the minimum temperature Pseudolithos Cubiformis can tolerate?
Not below 10°C. Below this, the plant can quickly rot.
Can Pseudolithos Cubiformis live in a pot?
Yes, it is even recommended. Use a small, shallow pot with maximum drainage.
Does Pseudolithos Cubiformis grow quickly?
No, it is very slow-growing. It can remain the same size for several years.
Is Pseudolithos Cubiformis toxic?
It is not considered toxic, but ingestion or contact with the sap should be avoided.
Can Pseudolithos Cubiformis be propagated?
Yes, only by seed. It does not produce offsets.