Photo: Krzysztof Ziarnek, Kenraiz · CC BY-SA 4.0 · Wikimedia Commons
Cushion Moss
Leucobryum glaucum
Domed, pillowy mounds of moss. The quickest way to make a terrarium feel like a tiny forest floor.
- Terrarium type
- Closed
- Terrarium size
- Small
- Light
- Low to medium
- Care level
- Easy
- Growth habit
- Carpet
- Pet safety
- Non-toxic to pets
Growing Cushion Moss in a terrarium
Where to place it
Lay the domed cushions on top of the substrate wherever you want a forest-floor look. It's happy in low to medium light and needs no planting depth.
Watering & humidity
Mist it to keep it damp and let the sealed humidity maintain it — moss draws moisture from the air, not roots. Rainwater or distilled water keeps it greenest.
Watch out for
Hard tap water leaves mineral crusts and browning over time. If a cushion pales, it's either too dry or getting too much direct light.
Reference: Leucobryum glaucum on Wikipedia.
Cushion Moss FAQ
Can Cushion Moss grow in a closed terrarium?+
Yes — Cushion Moss (Leucobryum glaucum) thrives in a closed terrarium. The sealed glass traps the constant, high humidity it needs, and it tolerates the lower light inside a covered vessel.
Can Cushion Moss grow in an open terrarium?+
It isn't recommended. Cushion Moss (Leucobryum glaucum) wants the constant humidity of a sealed, closed terrarium and will quickly dry out and crisp up in an open, airy one.
What size terrarium does Cushion Moss need?+
Cushion Moss suits a small terrarium — jars & bottles. It has a carpet growth habit, so plan its position with that in mind and trim or divide it if it starts to outgrow the glass.
Is Cushion Moss easy to care for?+
Cushion Moss is rated easy to care for in a terrarium. Domed, pillowy mounds of moss. The quickest way to make a terrarium feel like a tiny forest floor. Hard tap water leaves mineral crusts and browning over time. If a cushion pales, it's either too dry or getting too much direct light.
How much light does Cushion Moss need?+
Cushion Moss does best in low to medium light. Keep it out of direct sun, which magnifies through glass and scorches leaves. Lay the domed cushions on top of the substrate wherever you want a forest-floor look. It's happy in low to medium light and needs no planting depth.
Is Cushion Moss safe for cats and dogs?+
Cushion moss (Leucobryum glaucum) is considered non-toxic to cats and dogs — true mosses aren't known to be poisonous to pets.
