---
title: Smaller white-moss in a terrarium | Glass Jar Garden
description: Smaller white-moss (Leucobryum juniperoideum): Smaller, neater pale cushions. Greys when dry. Needs light 1,000 to 6,000 lux, humidity 65 to 95 % RH,...
url: https://glassjar.garden/guide/moss/leucobryum-juniperoideum/
---

Moss

# Smaller white-moss
Leucobryum juniperoideum

Moderate · Fine in a closed jar

Smaller, neater pale cushions. Greys when dry.

## What the simulation uses

- Light: 1,000 to 6,000 lux (The brightness it grows well in.)

- Humidity: 65 to 95 % RH (Air moisture it is happy in; below the lower end it dries out.)

- Temperature: 10 to 24 °C (Comfortable range; outside it growth slows.)

- Dies at: below -5 or above 44 °C (Days beyond these temperatures kill it.)

- Soil pH: 4 to 5.5 pH (Soil acidity it prefers.)

- Grows up: 0.06 cm/month (How fast it gains height in good conditions.)

- Spreads: 0.04 cm/month (How fast its edge creeps outwards.)

- Thickens: 1 %/month (How fast its cover fills in on its own ground.)

- Copes with wet: fair (How well it stands soggy soil; poor means rot comes quickly.)

- Copes with still air: fair (Sealed jars have still air; poor means grey mould finds it.)

- Copes with shade: good (How well it holds on in dim light.)

- Copes with drying: good (How well it survives the jar drying out.)

- Water use: 0.03 ml/cm²/day (Water that evaporates off the cushion each day in room air.)

- Holds water: 0.3 ml/cm² (Water a cm² of moss soaks up and keeps.)

- Grows on: soil, stone, wood (Where it can take hold and spread. Moss that cannot grow on stone thins out there.)

## Care

- Day length: 10 to 14 h

- Substrate: Moist

## What kills it

- waterlogging
- lime
- stagnant wet air

## Description
A close cousin of the larger cushion moss, it copes with a little more shade. Waterlogging, lime and stale wet air are its main enemies. Keep it moist with some fresh air around it.

Also called cushion moss, small pillow moss, bun moss.

Estimated, where sources were thin: growth (no species data; used L. glaucum rate); temp_lethal_c; humidity_rh_pct.

## Sources

- [nora.nerc.ac.uk/id/eprint/1131/1/BRYOATT.pdf](https://nora.nerc.ac.uk/id/eprint/1131/1/BRYOATT.pdf)
- [en.wikipedia.org/wiki/Leucobryum_juniperoideum](https://en.wikipedia.org/wiki/Leucobryum_juniperoideum)
- [digitalcommons.mtu.edu/cgi/viewcontent.cgi?article=1066&context=bryo-ecol-subchapters](https://digitalcommons.mtu.edu/cgi/viewcontent.cgi?article=1066&context=bryo-ecol-subchapters)

[Grow it in a jar](https://glassjar.garden/?guide=moss/leucobryum-juniperoideum)

[Silver moss](https://glassjar.garden/guide/moss/bryum-argenteum/) · [Star moss (twisted moss)](https://glassjar.garden/guide/moss/syntrichia-ruralis/) · [All moss](https://glassjar.garden/guide/moss/)