Photo: zebedeugalinhaCC BY 4.0via iNaturalistresized / cropped
Forsyth's Stonecrop Plant Care
Petrosedum forsterianum (Sm.) Grulich
Updated · Sources · How we source care data
Petrosedum forsterianum, also known as the "Spanish Stonecrop," is distinguished by its fleshy, blue-green leaves that form tight rosettes. Originating from the Mediterranean region, this succulent is popular among plant enthusiasts for its ability to thrive in dry, rocky environments.
Every 7–14 days
Full sun to partial shade
60–80°F
40–60%
At a glance
How do you care for Forsyth's Stonecrop?
Water Forsyth's Stonecrop every 7–14 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 Forsyth's Stonecrop Native To?
- Albania
- Algeria
- Austria
- Belarus
- Belgium
- Bosnia and Herzegovina
- Bulgaria
- Croatia
- Cyprus
- Czechia
- Denmark
- Egypt
- Estonia
- Finland
- France
- Germany
- Greece
- Hungary
- Iceland
- Ireland
- Italy
- Latvia
- Libya
- Lithuania
- Luxembourg
- Malta
- Moldova
- Montenegro
- Morocco
- North Macedonia
- Norway
- Poland
- Portugal
- Romania
- Russia
- Serbia
- Slovakia
- Slovenia
- Spain
- Sweden
- Switzerland
- The Netherlands
- Tunisia
- Ukraine
- United Kingdom
What Is the Forsyth's Stonecrop?
Forsyth's Stonecrop (Petrosedum forsterianum) belongs to the Crassulaceae family within the Petrosedum genus. Forsyth's Stonecrop is native to northwestern and southwestern Europe and northern Africa. Forsyth's Stonecrop is also known as Prostrate Stonecrop.
Forsyth's Stonecrop displays a low rosette, spreading growth habit, reaching up to tall with a spread of approximately 1 ft. Forsyth's Stonecrop produces small star-shaped white or yellow flowers.
Leaf size: approximately 2 inches.
How Often Should You Water a Forsyth's Stonecrop?
Petrosedum forsterianum requires watering every 7–14 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 7–14 days
Let soil partially dry between waterings
What Light Does the Forsyth's Stonecrop Need?
Forsyth's Stonecrop thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the Forsyth's Stonecrop Prefer?
Petrosedum forsterianum grows best at temperatures of 60–80°F. Forsyth's Stonecrop prefers humidity levels of 40–60%.
Temperature
60–80°F
Humidity
40–60%
What Soil Mix Works Best for a Forsyth's Stonecrop?
Sandy, well-draining succulent mix with perlite and pumice. Good drainage is essential for Forsyth's Stonecrop to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Forsyth's Stonecrop?
Feed Forsyth's Stonecrop 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 Forsyth's Stonecrop?
Repot every 2-3 years in early 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 Forsyth's Stonecrop?
Forsyth's Stonecrop can be propagated through stem cuttings, leaf cuttings. Similar propagation techniques also apply to pale stonecrop plant care, which shares the same genus.
Is the Forsyth's Stonecrop Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Forsyth's Stonecrop, 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 Forsyth's Stonecrop?
Forsyth's Stonecrop is susceptible to mealybugs, aphids, 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 Forsyth's Stonecrop Need?
Forsyth's Stonecrop grows outdoors in USDA Zone 6a – 9b. It survives winters down to planting zone 6a. Forsyth's Stonecrop is native to northwestern and southwestern Europe and northern Africa.
Hardiness Zone
Zone 6a – 9b
Keep exploring plants
Forsyth's Stonecrop 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 Petrosedum genus — compare its care with other Petrosedum species on PlantoScan.
Petrosedum is part of the Crassulaceae plant family — browse all Crassulaceae genera and species.
Forsyth's Stonecrop 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: Petrosedum forsterianum (Sm.) Grulich, family Crassulaceae (first published in Preslia 56: 40 (1984)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Forsyth's Stonecrop, 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: zebedeugalinha, CC BY 4.0, iNaturalist — original.
- Hardiness zone: USDA Zone 6a – 9b, 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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