Emerald Feather Moss for Terrariums (Brachythecium thraustum)

Name: Emerald Feather Moss for Terrariums (Brachythecium thraustum)
SKU: TM-EFM
Availability: InStock

Price range: $8.95 through $32.95

Cultivated, terrarium-grade, live moss that can be used as naturalistic ground or wallcover.

This moss is fine-textured and grows in dense, low-growing mats and creates a woodland-floor appearance. It can be used for open and closed terraria with stable moisture and indirect light. The scientific name of the moss is Brachythecium thraustum, but another synonym is Brachythecium buchananii.

Botanical Profile

Scientific Name: Brachythecium thraustum Müll.Hal. (often treated as a synonym of Brachythecium buchananii (Hook.) A.Jaeg.)
Common Names: Emerald Feather Moss, or Feather Moss (do not confuse it with other ‘feather mosses’.
Growth Form: Pleurocarpous with creeping stems that grow into irregular to sub-pinnate branching and grow into contiguous low mats.
Coloration: It has a bright emerald to yellow-green color when it is under higher light, but medium green when it grows in the shade.
Texture: This moss has a soft, finely feathery surface with small, lanceolate leaves. It has a smooth aesthetic from a distance.

Size

Clear

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Keep planning: Live moss for terrariums · The terrarium guide · The emerald feather collection

Cultivation (terrarium parameters)

Light: Place it under bright, but indirect light. Prevent sustained, direct midday sun; do not place it in front of a window.
Humidity: Optimal 60–90% RH. It can tolerate dips if the substrate remains evenly moist.
Temperature: It thrives within normal indoor ranges (60–77 °F / 15–25 °C). Prevent freezing or heat over 85 °F.
Substrate: This moss prefers a moisture-retentive yet aerated surface (e.g., fine bark/leaf-litter humus or sphagnum-based blends over a drainage layer). Use Moss Tac or anotehr organic adhesive for attachment because it needs firm surface contact for rapid establishment.
Watering: Mist it with clean, filtered water. Keep evenly damp and prevent soaking the moss.
Airflow: Some airflow is recommended to prevent moulding.
Growth Rate / Height: This moss keeps a very low profile, typically a few millimeters to ~1 cm (max 1/2 inch) in a terrarium culture.

Planting and Handling

When the moss arrives, keep it cool and shaded if you cannot install it immediately. Take it out of the plastic and put it in a breathable container, and mist lightly if browning or if it feels very dry.
To plant this moss, press the mat firmly onto the moistened substrate or hardscape to remove air gaps. Use Moss Tac, or another adhesive, to keep it in place so the moss can attatch itself to the surface.
Make sure that the moss receives daily moisture for the first 2–3 weeks to encourage attachment.

Use Cases

This moss is great for foreground carpeting and path edging in temperate or tropical forest-style terraria.
It can soften rock and wood transitions.
To cover walls.
It is great for creating microhabitats around water features.