Scientific Name: Eleocharis vivipara
Common Name: Tall Hairgrass, Viviparous Hairgrass
Origin: North and Central America
Growth Rate: Moderate to Fast
Difficulty Level: Easy to Moderate
Temperature: 20–30°C
pH: 6.0–7.5
GH: 2–15 dGH
KH: 1–8 dKH
Moderate to high lighting is recommended.
High light promotes denser growth and a more vibrant green appearance.
Under lower light conditions, the plant remains healthy but may become less dense.
CO₂ supplementation is beneficial but not essential.
Encourages faster growth, denser stands, and improved overall vigor.
Suitable for both low-tech and high-tech planted aquariums.
Requires regular supplementation of macro and micronutrients.
Benefits from nutrient-rich substrates and root fertilization.
Adequate nitrate, phosphate, potassium, and trace elements support vigorous growth.
Consistent fertilization helps maintain healthy green foliage and rapid propagation.
Best suited for the background.
Ideal for creating a natural reed-like or grassy backdrop.
Can be used to soften equipment and create depth within the aquascape.
Propagates through runners and plantlets formed on the tips of leaves (viviparous growth).
Daughter plants can be detached and replanted once roots develop.
Spreads readily under favorable conditions.
Allow sufficient vertical space, as the plant can grow quite tall.
Trim periodically to maintain the desired height and shape.
Plant in groups to create a dense, flowing background effect.
Stable nutrient availability encourages vigorous runner production and healthy growth.
Eleocharis vivipara is a graceful grass-like plant prized for its tall, flowing leaves and natural appearance. Unlike shorter hairgrass species, it creates a dramatic background effect reminiscent of underwater reeds or swaying marsh vegetation. Its fine texture adds movement, depth, and contrast to planted aquariums, making it particularly effective in Nature, biotope, and Dutch-style layouts. With balanced fertilization and optional CO₂ supplementation, it forms lush green stands that enhance the overall sense of scale and realism within the aquascape.
