Photo: Mahomed DesaiCC BY 4.0via iNaturalistresized / cropped
Rhomboideum Stoneplant Plant Care
Rhombophyllum rhomboideum (Salm-Dyck) Schwantes
Updated · Sources · How we source care data
This succulent's distinctive rhomboid-shaped leaves are a striking feature of Rhombophyllum rhomboideum. Originating from South Africa, this plant's unique appearance and ability to thrive in dry conditions make it a sought-after addition to any collection of succulents.
Every 14–21 days
Full sun to partial shade
60–80°F
40–60%
At a glance
How do you care for Rhomboideum Stoneplant?
Water Rhomboideum Stoneplant 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 40–60% humidity. Fertilize it every month during the growing season.
Where Is the Rhomboideum Stoneplant Native To?
What Is the Rhomboideum Stoneplant?
Rhomboideum Stoneplant (Rhombophyllum rhomboideum) belongs to the Aizoaceae family within the Rhombophyllum genus. Rhomboideum Stoneplant is native to the eastern Cape Provinces of South Africa.
Rhomboideum Stoneplant displays a low clumping succulent growth habit, reaching up to tall with a spread of approximately 1 ft. Rhomboideum Stoneplant produces small daisy-like flowers in shades of yellow, white, or pink.
Leaf size: approximately 2 inches.
How Often Should You Water a Rhomboideum Stoneplant?
Rhombophyllum rhomboideum 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 Rhomboideum Stoneplant Need?
Rhomboideum Stoneplant thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the Rhomboideum Stoneplant Prefer?
Rhombophyllum rhomboideum grows best at temperatures of 60–80°F. Rhomboideum Stoneplant prefers humidity levels of 40–60%.
Temperature
60–80°F
Humidity
40–60%
What Soil Mix Works Best for a Rhomboideum Stoneplant?
Sandy, well-draining soil mix with added perlite and gravel for good drainage. Good drainage is essential for Rhomboideum Stoneplant to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Rhomboideum Stoneplant?
Feed Rhomboideum Stoneplant every month during the growing season (spring and summer) with a balanced fertilizer diluted to the strength on the label.
Pause feeding in autumn and winter, when growth slows, and never fertilize dry soil — water first.
Fertilizing
Every month
During the growing season
The PlantoScan app can remind you when to water and when to fertilize each plant.
How Do You Repot a Rhomboideum Stoneplant?
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 Rhomboideum Stoneplant?
Rhomboideum Stoneplant can be propagated through leaf cuttings, division of offsets, seeds.
Is the Rhomboideum Stoneplant Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Rhomboideum Stoneplant, 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 Rhomboideum Stoneplant?
Rhomboideum Stoneplant is susceptible to mealybugs, aphids, root mealybugs. 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 Rhomboideum Stoneplant Need?
Rhomboideum Stoneplant grows outdoors in USDA Zone 9a – 11b. It survives winters down to planting zone 9a. Rhomboideum Stoneplant is native to the eastern Cape Provinces of South Africa. In cooler regions, grow Rhomboideum Stoneplant as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 9a – 11b
Keep exploring plants
Rhomboideum Stoneplant 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 Rhombophyllum genus — compare its care with other Rhombophyllum species on PlantoScan.
Rhombophyllum is part of the Aizoaceae plant family — browse all Aizoaceae genera and species.
Rhomboideum Stoneplant 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: Rhombophyllum rhomboideum (Salm-Dyck) Schwantes, family Aizoaceae (first published in in Z. Sukkulentenk. 3: . 1927.) — World Flora Online record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Rhomboideum Stoneplant, 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.
- Photo: Mahomed Desai, CC BY 4.0, iNaturalist — original.
- Hardiness zone: USDA Zone 9a – 11b, 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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