DIFFICULTY Easy–Moderate

A forgiving choice for newer planted tanks.

LIGHT Low

Around 8 hours is a useful starting point.

CO₂ Optional

Injection is not normally necessary.

GROWTH Slow

Low trimming needs.

PLANT OVERVIEW

About Willow Moss

A cool-water moss with a willow-like, drooping look.

Willow Moss forms long, dark, willow-like strands and prefers cooler, well-oxygenated water, making it a good fit for temperate and coldwater tanks. Attach to wood or rock in moderate flow; it dislikes warm, stagnant conditions.
Shrimp friendly Nano suitable Low-tech suitable High-tech suitable Fry cover
CARE PROFILE

What this plant needs.

The useful numbers and practical notes, grouped around how you actually keep the plant.

TANK FIT

Placement + size

Primary placementEpiphyte
Typical height2–8 in
Typical width6 in
Suggested minimum tank2 gal
Suggested tank height6 in+
LIGHT + CO₂

Energy demand

Ideal lightLow
Photoperiod range7–10 hr
Approx. PAR15–40
Injected CO₂Optional
CO₂ benefitLow
NUTRITION

Where it feeds

Root feedingVery Low
Water-column feedingLow
Overall fertilizer demandLow
Iron demandLow
MicronutrientsLow
WATER

Useful parameter range

Temperature50–75°F
pH5.5–7.5
GH2–15 dGH
KH1–12 dKH
PLANTING

How to plant it.

Substrate: Attach to wood, rock or mesh
Hardscape: Can be attached to rock or wood.

Tie thinly to hardscape or mesh; trim to keep dense and prevent browning underneath.

GROWTH + PROPAGATION

What to expect after planting.

Propagation

Division

Acclimation

Slow to attach; keep flow moderate and rinse detritus.

COMMON PROBLEMS

What usually goes wrong.

Traps detritus and algae if not rinsed and trimmed; browns underneath when too thick.