Spring Hair Moss Plant Care
Mnium hornum Hedw.
Updated · Sources · How we source care data
Mnium hornum, also known by the common names horn calcareous moss or swan's-neck thyme-moss, is a species of moss in the genus Mnium.
Every 2–3 days
Indirect bright light
50–75°F
60–80%
At a glance
How do you care for Spring Hair Moss?
Water Spring Hair Moss every 2–3 days, letting the top layer of soil dry out between waterings, and give it indirect bright light. It prefers temperatures of 50–75°F (10–24°C) and 60–80% humidity.
What Is the Spring Hair Moss?
Spring Hair Moss (Mnium hornum) belongs to the Mniaceae family within the Mnium genus.
Spring Hair Moss displays a low mat-forming growth habit, reaching up to 0.1 ft tall with a spread of approximately 0.5 ft. Spring Hair Moss produces tiny inconspicuous flowers.
Leaf size: approximately 0.2 inches.
How Often Should You Water a Spring Hair Moss?
Mnium hornum requires watering every 2–3 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 2–3 days
Let soil partially dry between waterings
What Light Does the Spring Hair Moss Need?
Spring Hair Moss thrives in indirect bright light. Avoid placing Spring Hair Moss in direct, harsh sunlight for extended periods, as this can scorch the foliage.
Light Requirement
Indirect bright light
What Temperature and Humidity Does the Spring Hair Moss Prefer?
Mnium hornum grows best at temperatures of 50–75°F. Spring Hair Moss prefers humidity levels of 60–80%. A pebble tray or humidifier helps maintain adequate moisture around the plant.
Temperature
50–75°F
Humidity
60–80%
What Soil Mix Works Best for a Spring Hair Moss?
Well-draining acidic soil mix with peat moss and perlite. Good drainage is essential for Spring Hair Moss to prevent waterlogging, which leads to root rot and fungal issues.
How Do You Repot a Spring Hair 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 Spring Hair Moss?
Spring Hair Moss can be propagated through spores, division of clumps. Similar propagation techniques also apply to mnium insigne plant care, which shares the same genus.
Is the Spring Hair Moss Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Spring Hair 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 Spring Hair Moss?
Spring Hair Moss is susceptible to 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 Spring Hair Moss Need?
Spring Hair Moss grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. In cooler regions, grow Spring Hair Moss as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 12a
Keep exploring plants
Spring Hair 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 Mnium genus — compare its care with other Mnium species on PlantoScan.
Mnium is part of the Mniaceae plant family — browse all Mniaceae genera and species.
Spring Hair 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: Mnium hornum Hedw., family Mniaceae (first published in Sp. Musc. Frond. 188 1801) — World Flora Online record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Spring Hair 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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