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Scientific Name:

Echinodorus horizontalis

Common Name:

Horizontal Amazon Sword

Family:

Alismataceae

Type:

Rooted Aquatic Plant (Rosette, Horizontal Growth Habit)

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General Description:

Echinodorus horizontalis is a distinctive Amazon Sword species known for its low, wide, and horizontal growth form. Its broad, oval leaves spread outward rather than upward, creating a lush, ground-covering canopy effect. The vibrant green foliage and soft leaf texture allow it to blend beautifully into natural-style aquascapes.

This species excels in aquariums that aim to replicate South American riverbank environments, offering both visual balance and natural shelter for aquatic life.

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Ideal Environment:

Best for freshwater planted aquariums and paludariums.
Thrives in moderate to high lighting for compact, horizontal growth.
Optimal temperature range: 22–28°C (72–82°F).
pH range: 6.2 – 7.2 is ideal.
Designed for midground placement, or even foreground in larger tanks.

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Cultivation & Care:

Plant directly in nutrient-rich substrate or living soil — this species is a strong root feeder.
Supplement with root tabs every 4–6 weeks to maintain lush foliage.
CO₂ injection is beneficial, improving color depth and leaf width.
Maintain consistent water parameters for best results.
Trim older leaves regularly to encourage new outward growth.

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Key Features:

Natural horizontal spread creates a soft, layered aquascape structure.
Low-growing form makes it ideal for creating depth perspective.
Provides shade and protection for shrimp and juvenile fish.
Adaptable and stable, perfect for long-term planted aquariums.
Enhances the tank’s natural biotope aesthetic.

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Note:

Unlike many upright-growing Amazon Swords, Echinodorus horizontalis develops outward, not upward. To maintain this compact shape, good lighting + nutrient-rich substrate are essential.