
Photo: Christine YoungCC BY 4.0via iNaturalistresized / cropped
Gray Coral Slime Plant Care
Arcyria cinerea
Updated · Sources · How we source care data
Arcyria cinerea is known for its striking bright pink or orange coloration, making it a standout addition to any garden. Originating from North America and Europe, its unique appearance and rarity make it highly sought after by plant collectors looking to diversify their collections.
Every 3–7 days
Bright indirect
55–75°F
60–80%
At a glance
How do you care for Gray Coral Slime?
Water Gray Coral Slime every 3–7 days, letting the top layer of soil dry out between waterings, and give it bright indirect light. It prefers temperatures of 55–75°F (13–24°C) and 60–80% humidity. Fertilize it every 3 months during the growing season.
Where Is the Gray Coral Slime Native To?
- Albania
- Austria
- Belarus
- Belgium
- Bosnia and Herzegovina
- Bulgaria
- Canada
- Croatia
- Cyprus
- Czechia
- Denmark
- Estonia
- Finland
- France
- Germany
- Greece
- Hungary
- Iceland
- Ireland
- Italy
- Latvia
- Lithuania
- Luxembourg
- Malta
- Mexico
- Moldova
- Montenegro
- North Macedonia
- Norway
- Poland
- Portugal
- Romania
- Russia
- Serbia
- Slovakia
- Slovenia
- Spain
- Sweden
- Switzerland
- The Netherlands
- Ukraine
- United Kingdom
- United States
What Is the Gray Coral Slime?
Gray Coral Slime (Arcyria cinerea) belongs to the Trichiaceae family within the Arcyria genus. Gray Coral Slime is native to North America, Europe~ height: 0.5~width: 0.1~ fertilizer:<Write how often to fertilize plant "Arcyria cinerea" per month but only write the output value in just integer>3. Gray Coral Slime is also known as Cinderella's Slippers.
Gray Coral Slime displays a clumped, spreading growth habit, reaching up to tall with a spread of approximately . Gray Coral Slime produces none~nativeto: north america, europe~ height: 0.5~width: 0.1~ fertilizer:<write how often to fertilize plant "arcyria cinerea" per month but only write the output value in just integer>3.
How Often Should You Water a Gray Coral Slime?
Arcyria cinerea requires watering every 3–7 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 3–7 days
Let soil partially dry between waterings
What Light Does the Gray Coral Slime Need?
Gray Coral Slime thrives in bright indirect light. Avoid placing Gray Coral Slime in direct, harsh sunlight for extended periods, as this can scorch the foliage.
Light Requirement
Bright indirect
What Temperature and Humidity Does the Gray Coral Slime Prefer?
Arcyria cinerea grows best at temperatures of 55–75°F. Gray Coral Slime prefers humidity levels of 60–80%. A pebble tray or humidifier helps maintain adequate moisture around the plant.
Temperature
55–75°F
Humidity
60–80%
What Soil Mix Works Best for a Gray Coral Slime?
Well-draining, rich in organic matter. Good drainage is essential for Gray Coral Slime to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Gray Coral Slime?
Feed Gray Coral Slime every 3 months 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 3 months
During the growing season
The PlantoScan app can remind you when to water and when to fertilize each plant.
How Do You Repot a Gray Coral Slime?
Repot every 2 years~flower: None~nativeTo: North America, Europe~ height: 0.5~width: 0.1~ fertilizer:<Write how often to fertilize plant "Arcyria cinerea" per month but only write the output value in just integer>3. 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 Gray Coral Slime?
Gray Coral Slime can be propagated through through spores released from fruiting bodies.
Is the Gray Coral Slime Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Gray Coral Slime, so we can't confirm whether it is safe for cats and dogs. Keep pets from chewing it as a precaution.
Never eat a wild mushroom based on an app identification. Many mushrooms have poisonous lookalikes, and edibility must never be judged from an app.
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 Gray Coral Slime?
Gray Coral Slime is susceptible to none~potting: repot every 2 years~flower: none~nativeto: north america, europe~ height: 0.5~width: 0.1~ fertilizer:<write how often to fertilize plant "arcyria cinerea" per month but only write the output value in just integer>3. 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.
Keep exploring plants
Gray Coral Slime 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 Arcyria genus (family Trichiaceae) — search all Arcyria species in the plant lookup.
Gray Coral Slime 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: Arcyria cinerea, family Trichiaceae — World Flora Online.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Gray Coral Slime, 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: Christine Young, CC BY 4.0, iNaturalist — original.
- 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.
