Brown's Tetrodontium Moss Plant Care

Tetrodontium brownianum (Dicks.) Schwägr.

Updated · Sources · How we source care data

Tetrodontium brownianum is a species of moss commonly known as Brown's tetrodontium moss or Brown's four-tooth moss. It is widely distributed.

Water

Every 3–5 days

Light

Low to medium indirect light

Temp

50–75°F

Humidity

40–70%

At a glance

How do you care for Brown's Tetrodontium Moss?

Plant Brown's Tetrodontium Moss in low to medium indirect light (USDA zones 12a) and water a young shrub every 3–5 days until it is established. It tolerates temperatures of 50–75°F (10–24°C). Fertilize it every 8 months during the growing season.

Where Is the Brown's Tetrodontium Moss Native To?

Native range2 countries

What Is the Brown's Tetrodontium Moss?

Brown's Tetrodontium Moss (Tetrodontium brownianum) belongs to the Tetraphidaceae family within the Tetrodontium genus. Brown's Tetrodontium Moss is native to Washington state and British Columbia on the west coast and from Newfoundland to Ohio to the east.

Brown's Tetrodontium Moss displays a low rosette, spreading growth habit, reaching up to 0.5 ft tall with a spread of approximately 0.5 ft. Brown's Tetrodontium Moss produces tiny, inconspicuous flowers.

Leaf size: approximately 0.5 inches.

How Often Should You Water a Brown's Tetrodontium Moss?

Water a young or newly planted Brown's Tetrodontium Moss every 3–5 days, soaking the whole root zone, until it is established — usually one to two growing seasons. Established shrubs mainly need water during long dry spells. In a container, water whenever the top few centimetres of soil are dry.

Watering Frequency

Every 3–5 days

Until established; then in dry spells

What Light Does the Brown's Tetrodontium Moss Need?

Brown's Tetrodontium Moss thrives in low to medium indirect light. The optimal light range is 50–250 lux. Avoid placing Brown's Tetrodontium Moss in direct, harsh sunlight for extended periods, as this can scorch the foliage.

Light Requirement

Low to medium indirect light

50–250 lux

What Temperature and Humidity Does the Brown's Tetrodontium Moss Prefer?

Tetrodontium brownianum tolerates temperatures of 50–75°F. Brown's Tetrodontium Moss prefers humidity levels of 40–70%.

Temperature

50–75°F

Humidity

40–70%

What Soil Mix Works Best for a Brown's Tetrodontium Moss?

Moist, well-draining soil with high organic content. Good drainage is essential for Brown's Tetrodontium Moss to prevent waterlogging, which leads to root rot and fungal issues.

How Often Should You Fertilize a Brown's Tetrodontium Moss?

Feed Brown's Tetrodontium Moss every 8 months during the growing season with a balanced, slow-release fertilizer at the rate on the label. Established shrubs in good soil often need little extra feeding, so let weak growth or pale foliage guide you.

Stop feeding by late summer so new growth can harden before winter.

Fertilizing

Every 8 months

During the growing season

The PlantoScan app can remind you when to water and when to fertilize each plant.

Where Should You Plant a Brown's Tetrodontium Moss?

Choose a spot with low to medium indirect light and moist, well-draining soil with high organic content. Avoid low spots where water collects after rain.

Brown's Tetrodontium Moss is suited to USDA Zone 12a.

Plant container-grown or balled-and-burlapped shrubs in spring or early autumn, setting the root flare at soil level, and water well after planting.

How Far Apart Should You Plant a Brown's Tetrodontium Moss?

Brown's Tetrodontium Moss can spread to about 1 ft (0.2 m) and reach about 1 ft (0 m) tall. Space plants about 1 ft (0.2 m) apart so mature crowns don't crowd each other, and plant at least half that distance from buildings, fences and paths.

Planning a row or hedge? Try the plant spacing calculator.

How Do You Prune a Brown's Tetrodontium Moss?

Prune Brown's Tetrodontium Moss while it is dormant in late winter: first remove dead, damaged and crossing branches, then thin lightly for shape.

If it flowers in spring, prune right after flowering instead so you don't remove next year's buds. Never take off more than about a quarter of the shrub in one year.

How Do You Care for a Brown's Tetrodontium Moss in Winter?

Brown's Tetrodontium Moss is frost-tender (hardy to USDA zone 12). In colder areas grow it in a container and move it to a bright, frost-free place before the first frost.

How Do You Propagate a Brown's Tetrodontium Moss?

Brown's Tetrodontium Moss can be propagated through spores, division of clumps. Similar propagation techniques also apply to tetrodontium repandum plant care, which shares the same genus.

Is the Brown's Tetrodontium Moss Toxic to Pets and Children?

Pet safety not verified

The ASPCA does not list Brown's Tetrodontium 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 Brown's Tetrodontium Moss?

Brown's Tetrodontium Moss is susceptible to fungal diseases, slugs. 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 Brown's Tetrodontium Moss Need?

Brown's Tetrodontium Moss grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. Brown's Tetrodontium Moss is native to Washington state and British Columbia on the west coast and from Newfoundland to Ohio to the east. In cooler regions, grow Brown's Tetrodontium Moss as a houseplant or bring it indoors before the first frost.

Hardiness Zone

Zone 12a

Keep exploring plants

Brown's Tetrodontium 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 Tetrodontium genus — compare its care with other Tetrodontium species on PlantoScan.

Tetrodontium is part of the Tetraphidaceae plant family — browse all Tetraphidaceae genera and species.

Brown's Tetrodontium Moss copes with lower light than most plants — browse the full list of low-light plants.

Related Plant Care Guides

Closely related plants with similar care requirements:

Sources

  • Scientific name & taxonomy: Tetrodontium brownianum (Dicks.) Schwägr., family Tetraphidaceae (first published in Sp. Musc. Frond., Suppl. 2 2: 102 1824) — World Flora Online record.
  • Pet toxicity: Pet safety not verified: the ASPCA does not list Brown's Tetrodontium 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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