Grey Cushion Moss Plant Care
Grimmia pulvinata (Hedw.) Sm.
Updated · Sources · How we source care data
Grimmia pulvinata, otherwise known as grey-cushioned grimmia or pulvinate dry rock moss, is a bryophyte moss common in temperate climates worldwide.
Every 3–7 days
Medium indirect light
50–75°F
40–70%
At a glance
How do you care for Grey Cushion Moss?
Water Grey Cushion Moss every 3–7 days, letting the top layer of soil dry out between waterings, and give it medium indirect light. It prefers temperatures of 50–75°F (10–24°C) and 40–70% humidity.
What Is the Grey Cushion Moss?
Grey Cushion Moss (Grimmia pulvinata) belongs to the Grimmiaceae family within the Grimmia genus. Grey Cushion Moss is also known as Common Grimmia.
Grey Cushion Moss displays a low mat-forming growth habit, reaching up to 0.1 ft tall with a spread of approximately 0.5 ft. Grey Cushion Moss produces tiny inconspicuous flowers.
Leaf size: approximately 0.1 inches.
How Often Should You Water a Grey Cushion Moss?
Grimmia pulvinata 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 Grey Cushion Moss Need?
Grey Cushion Moss thrives in medium indirect light. Avoid placing Grey Cushion Moss in direct, harsh sunlight for extended periods, as this can scorch the foliage.
Light Requirement
Medium indirect light
What Temperature and Humidity Does the Grey Cushion Moss Prefer?
Grimmia pulvinata grows best at temperatures of 50–75°F. Grey Cushion Moss prefers humidity levels of 40–70%.
Temperature
50–75°F
Humidity
40–70%
What Soil Mix Works Best for a Grey Cushion Moss?
Well-draining sandy soil mix with peat moss and perlite. Good drainage is essential for Grey Cushion Moss to prevent waterlogging, which leads to root rot and fungal issues.
How Do You Repot a Grey Cushion Moss?
Repot every 1-2 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 Grey Cushion Moss?
Grey Cushion Moss can be propagated through spores, division of clumps.
Is the Grey Cushion Moss Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Grey Cushion Moss, 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 Grey Cushion Moss?
Grey Cushion Moss is susceptible to fungus gnats, spider mites, scale insects. 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 Grey Cushion Moss Need?
Grey Cushion Moss grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. In cooler regions, grow Grey Cushion Moss as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 12a
Keep exploring plants
Grey Cushion Moss 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 Grimmia genus — compare its care with other Grimmia species on PlantoScan.
Grimmia is part of the Grimmiaceae plant family — browse all Grimmiaceae genera and species.
Grey Cushion Moss 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: Grimmia pulvinata (Hedw.) Sm., family Grimmiaceae (first published in Engl. Bot. 24: 1728 1807) — World Flora Online record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Grey Cushion Moss, 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 12a, calculated from the plant's minimum temperature.
- 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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