Description
Giant Hairgrass (Eleocharis montevidensis) is a tall, graceful freshwater aquarium grass plant prized for its long, flowing blades that create a dramatic natural backdrop in planted aquariums. Unlike dwarf varieties, Giant Hairgrass grows significantly taller, making it ideal for aquascapers who want a meadow-like background with natural movement and depth.
This hardy hairgrass aquarium plant sways beautifully with water flow, mimicking the look of underwater reeds found in lakes and rivers. It thrives in a wide range of aquarium setups and is suitable for both beginners and experienced hobbyists. Whether used as a background plant in large aquariums or as a midground accent in open layouts, Eleocharis montevidensis brings realism and elegance to any aquascape.
At our Splashy Fish tropical fish store, our Giant Hairgrass and other aquarium plants for sale are carefully selected and packed with love! Visit us to buy them online or at our aquarium store in Virginia for a wide selection of freshwater fish for sale, betta fish for sale, freshwater shrimp for sale, and aquarium supplies.
Why Choose Giant Hairgrass?
Tall, flowing grass blades: Creates a natural riverbank or meadow effect.
Hardy and adaptable: Grows well in many freshwater conditions.
Easy to grow: Suitable for low-tech and high-tech aquariums.
Low to moderate light tolerant: No intense lighting required.
Fish & shrimp friendly: Provides shelter and natural grazing areas.
Adds movement and depth: Blades sway gently with water current.
How to Plant Giant Hairgrass in Your Aquarium
Rinse the plant gently to remove any gel or debris before planting.
Separate into small clumps to encourage even spreading.
Plant each clump into the substrate using aquascaping tweezers, leaving space between groups.
Ensure roots are buried while keeping the crown above the substrate.
Allow time for the plant to establish and send out runners.
Tip: Giant Hairgrass spreads via runners. Avoid overcrowding at planting to achieve a more natural, flowing look as it fills in.
How to Care for Giant Hairgrass
pH: 6.5 – 7.8
Temperature: 68–82°F (20–28°C)
Lighting: Low to moderate (20–40 PAR). Stronger light encourages faster growth
CO₂: Optional. Enhances growth rate and blade density
Fertilization: Benefits from root tabs and nutrient-rich substrate
Placement: Background in medium to large aquariums; midground in extra-large tanks
