Weeping moss
Vesicularia ferriei
Water parameters
Light and nutrients
Substrate type: epiphyte. Propagation: fragmentation.
Substrate compatibility
| Substrate | pH effect | Nutrient load |
|---|---|---|
| Wood and rock mounts (Hardscape mount) | varies | none |
| Inert sand (Pool filter sand) | neutral / inert | none |
| Inert gravel (Aquarium gravel) | neutral / inert | none |
| Bare bottom (no substrate) (Bare bottom) | n/a | none |
| Aquasoil (ADA Amazonia) | lowers pH | very high |
| Mineralized clay substrate (Seachem Fluorite) | neutral / inert | moderate |
With fish
Origin and habitat
Vesicularia ferriei (Cardot & Ther.) Broth. is a moss in the family Hypnaceae, thought to originate in China, where it creeps over wet rock, sandy soil and riverbanks near running water. Its trademark is a downward-bent shoot habit: the fronds droop from their attachment point and hang like a miniature weeping willow, which is what separates it from mosses that grow outward or upward. Individual fronds are fine and soft, around 2–5 cm long, in a bright to medium green. The cascading look shows best on tall driftwood or overhanging hardscape, where the strands fall freely into a curtain. It entered the wider aquarium trade through Oriental Aquarium Plants. One caveat worth knowing: several unrelated mosses are sold under the weeping moss label, and not all of them actually droop, so stock can be inconsistent.
Care notes
Tie or glue it to wood or stone with thread, fishing line, or cyanoacrylate gel. The weeping shape only reads when the moss sits on a raised surface such as a branch or the top of a piece of driftwood, letting the fronds spill downward; on a flat horizontal mount it looks much like any other moss. It does well in low to moderate light and handles brighter light better than most mosses, though strong light without CO2 invites algae on the fine fronds. CO2 thickens growth but is not needed. Growth is moderate by moss standards. Trim with scissors to keep the shape, and reattach the clippings to spread it. It is comfortable around 20–28°C and undemanding about water chemistry. In shrimp tanks the dense strands make good grazing and cover. It is stocked less often than Java moss and usually costs more.