Dwarf hairgrass care

Eleocharis acicularis

Dwarf hairgrass (Eleocharis acicularis)
Shown: Eleocharis parvula, the other dwarf hairgrass, on a lake shore. Photo: Andrey Zharkikh, CC BY 2.0, via Wikimedia Commons

Dwarf hairgrass makes a lawn of fine blades.

Light
Medium
CO₂
Helps
Where it goes
Foreground
Growth
Moderate
Care level
Moderate
Height
2 to 6 in
Temperature
60 to 83 °F
How to plant
Split the pot into small tufts and plant them an inch apart
Propagation
Runners

In a 20 gallon long

12¾ in tall
Drawn at its usual full height on the same scale as the tank.

How to grow dwarf hairgrass

Dwarf hairgrass makes a lawn of fine blades. It spreads fastest with medium to high light, CO₂ and a nutrient-rich substrate; without CO₂ it still grows, more slowly. Trim it like a lawn once it fills in.

Common problems

  • Patchy growth and algae between tufts in low-tech tanks; plant tufts closer and add root tabs.

Light for dwarf hairgrass

Medium-light plants grow best under a planted-tank LED that spans the tank. Check the mounting length against your tank before buying: how to fit a planted light.

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Fluval Plant 3.0 22W

Adjustable mounting range 15–24 in; maker publishes 1,450 lm and PAR at several depths.

Finnex Planted+ 24/7 CRV-24

Fixed 24-in fixture model; fit depends on the supplied legs and tank span.

Plants that grow in the same light

Sources

Plant identity from Wikipedia: Eleocharis acicularis. Heights, temperatures and care are typical ranges in aquariums from common planted-tank practice, not figures from that article. Drawings are our own; photo credits follow.

Photo credits

Real photographs from Wikimedia Commons, resized and cropped to fit; each is used under the license named.