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Giant Hairgrass
Eleocharis montevidensis
Family: Cyperaceae
The tallest commonly kept Eleocharis species, producing stiff, dark green needle-like blades up to 30–50 cm tall. Creates a dramatic, grass-like background that mimics riparian meadows. Unlike dwarf hairgrasses, it does not form a dense carpet but instead grows as individual clumps. Very undemanding and one of the few Eleocharis that thrives without CO₂ injection. Excellent for paludarium setups or tall tanks where vertical structure is desired.
Keeping this species
- co2
- Not required
- light
- Low to high
- max size
- 30–50 cm tall
- placement
- Background
- substrate
- Any
- growth rate
- Medium
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Water it likes
- ph
- 6.0–8.0
- notes
- Grows as clumps rather than a carpet. Very hardy and undemanding — great for beginners wanting a tall grass look.
- hardness
- 2–15 dGH
- temperature
- 138–180°F (59–82°C)