None Plant Care
Pseudolithos horwoodii P.R.O.Bally & Lavranos
Updated · Sources · How we source care data
This unique succulent species stands out with its distinctive rounded, pebble-like shape and intricate patterns resembling a stone. Originating from Somalia, it is highly sought after by plant collectors for its rare appearance and ability to thrive in arid conditions.
Every 14–21 days
Full sun to partial shade
60–80°F
30–50%
At a glance
How do you care for None?
Water None every 14–21 days, letting the top layer of soil dry out between waterings, and give it full sun to partial shade. It prefers temperatures of 60–80°F (16–27°C) and 30–50% humidity.
Where Is the None Native To?
What Is the None?
None (Pseudolithos horwoodii) belongs to the Apocynaceae family within the Pseudolithos genus. None is native to arid areas of Somalia.
None displays a low clumping succulent growth habit, reaching up to tall with a spread of approximately . None produces small, star-shaped flowers in shades of white or yellow.
Leaf size: approximately 1 inches.
How Often Should You Water a None?
Pseudolithos horwoodii requires watering every 14–21 days. Allow the top layer of soil to dry between waterings to prevent root rot. Reduce watering frequency during winter when growth slows.
Watering Frequency
Every 14–21 days
Let soil partially dry between waterings
What Light Does the None Need?
None thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the None Prefer?
Pseudolithos horwoodii grows best at temperatures of 60–80°F. None prefers humidity levels of 30–50%.
Temperature
60–80°F
Humidity
30–50%
What Soil Mix Works Best for a None?
Sandy, well-draining soil mix with added pumice or perlite for extra drainage. Good drainage is essential for None to prevent waterlogging, which leads to root rot and fungal issues.
How Do You Repot a None?
Repot every 2-3 years in spring. Choose a pot one size larger than the current container, and ensure it has drainage holes to allow excess water to escape.
How Do You Propagate a None?
None can be propagated through seeds, stem cuttings. Similar propagation techniques also apply to snake's head plant care, which shares the same genus.
Is the None Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list None, so we can't confirm whether it is safe for cats and dogs. Keep pets from chewing it as a precaution.
This is a general caution, not veterinary or medical advice. If your pet ate a plant, contact your vet or animal poison control.
See all plants toxic to cats and plants toxic to dogs.
What Pests and Diseases Affect the None?
None is susceptible to mealybugs, spider mites. Inspect the foliage regularly, especially along leaf undersides and stems. Treat infestations promptly with insecticidal soap or neem oil to prevent spread.
Yellow leaves, brown tips or drooping? See common plant problems and how to fix them.
What USDA Hardiness Zone Does the None Need?
None grows outdoors in USDA Zone 11a – 12b. It survives winters down to planting zone 11a. None is native to arid areas of Somalia. In cooler regions, grow None as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 11a – 12b
Keep exploring plants
None is one of many species covered in the complete plant care and identification guide, which groups plants by genus, attribute, and popularity.
It belongs to the Pseudolithos genus — compare its care with other Pseudolithos species on PlantoScan.
Pseudolithos is part of the Apocynaceae plant family — browse all Apocynaceae genera and species.
None thrives in bright light and direct sun — see other bright-light plants.
Related Plant Care Guides
Closely related plants with similar care requirements:
Sources
- Scientific name & taxonomy: Pseudolithos horwoodii P.R.O.Bally & Lavranos, family Apocynaceae (first published in Cact. Succ. J. (Los Angeles) 46: 220 (1974)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list None, so we can't confirm whether it is safe for cats and dogs. Checked against the ASPCA plant list; any other toxicity note on this page comes from PlantoScan's plant database.
- Hardiness zone: USDA Zone 11a – 12b, estimated from the plant's typical growing conditions.
- Care values(watering, light, temperature, humidity, soil, fertilizing): PlantoScan's plant database, filtered by automatic plausibility checks — values that fail them are hidden. How we source and check plant data.
Spotted a mistake? Email info@upvision.media with the page link — we check and correct reported errors.
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