How to Grow Amazon Sword

Amazon Sword

Echinodorus amazonicus

aquatic plant

Amazon Sword is a popular freshwater aquarium plant native to South America, prized for its long, lance-shaped green leaves that create an attractive backdrop in planted tanks. It grows moderately fast and can reach 12-20 inches tall, making it suitable for midground to background placement. The plant is hardy, adaptable, and beginner-friendly, thriving in a wide range of aquarium conditions.

Growing Conditions

☀️

Sun: Moderate to high light; 8-12 hours daily (400-600 lm); LED aquarium lights (6500K color temperature recommended)

💧

Water: Consistent water conditions; pH 6.0-7.5, temperature 60-82°F (ideally 72-78°F); moderate water current; weekly 25-50% water changes to manage nitrate and maintain nutrient balance

📏

Spacing: 6-8 inches apart (center to center) to allow leaf development without crowding inches

📅

Days to maturity: 30-60 days before establishing robust root system and visible growth

🌱

Planting depth: Bury the rhizome (base) in substrate with crown just above surface; do not bury leaves

Soil

Type: Nutrient-rich aquarium substrate (sand, aquasoil, or gravel)

pH: 6.0-7.5

Amendments:

Liquid fertilizer (all-in-one or macro/micronutrient formulations) Root tabs for substrate-rooted nutrients Iron supplements for enhanced leaf coloration

Growth Stages

Acclimation & Root Development

1-2 weeks

Plant establishes in new tank; leaves may appear pale or slightly drooped; root system develops from rhizome

Avoid moving the plant frequently; maintain stable water parameters; provide consistent lighting and fertilization

Vegetative Growth

2-4 weeks

New leaves emerge from crown; plant growth accelerates; leaves become fuller and more vibrant green

Ensure adequate lighting and nutrient availability (macro and micronutrients); perform regular water changes; pinch off dead outer leaves

Maturation

Ongoing (weeks 4-8+)

Plant reaches desired height; leaves are full-sized and densely spaced; growth rate stabilizes

Continue regular fertilization and water maintenance; prune runners or oversized leaves to maintain shape and prevent shading lower areas

Runner Production

Weeks 4-8 onward

Mature plants produce horizontal runners; plantlets develop at nodes along runners

Decide whether to propagate runners or remove them to keep plant compact; anchor new plantlets to substrate or allow them to float initially

Decline (if neglected)

Varies (preventable with proper care)

Leaves yellow, brown, or melt if nutrients are depleted or light is insufficient; growth slows dramatically

Increase fertilization frequency; boost lighting; perform larger water changes; trim damaged leaves; check for algae or pest snail overpopulation

Companion Planting

Plan your garden →

Plant with:

Java Fern Anubias Rotala Ludwigia Alternanthera Crypts Dwarf Hairgrass Moss (Christmas, Java, or Flame)

Avoid planting near:

Large herbivorous fish (goldfish, plecos) that uproot or eat plants Fast-growing, light-hogging stem plants that create too much shade

Common Pests

Reduce lighting duration or intensity; maintain nutrient balance (avoid excess phosphate); introduce algae-eating fish (amano shrimp, otocinclus) or manually remove; increase plant biomass to outcompete algae
Manual removal; reduce feeding (excess food decays); quarantine new plants; use snail-eating fish or pea puffers; maintain water quality to discourage reproduction
Dose with comprehensive liquid fertilizer or all-in-one supplement; increase water change frequency; add root tabs; adjust lighting and CO₂ if available
Remove heavily affected leaves; increase water current; elevate tank temperature slightly (78-80°F); reduce phosphate; use Excel (glutaraldehyde) or 2H₂O₂ spot treatments carefully; introduce amano shrimp

Uses

🏠

Aquarium Décor & Biotope Design

Household

Amazon Sword creates naturalistic jungle or South American biotope aquascapes, providing a dense, lush aesthetic that mimics its native rainforest habitat. The tall, elongated leaves offer shelter and resting spots for fish. [source]

🦋

Fish Habitat & Spawning Medium

Wildlife

The plant provides hiding spots for fry and smaller fish, reducing stress and predation. Many fish species use Amazon Sword leaves as a spawning substrate. [source]

🏠

Water Filtration & Nutrient Uptake

Household

Like all aquatic plants, Amazon Sword absorbs excess nutrients (nitrogen, phosphorus) and produces oxygen, helping maintain water quality and reduce algae growth by competing for dissolved nutrients. [source]

🍳

Edibility (Limited)

Culinary

While not commonly consumed, Amazon Sword leaves are non-toxic and edible in salads or as a garnish, though they are fibrous and not particularly flavorful. Some aquarists have reported adding them to herbivore fish diets. [source]

💊

Aquarium pH Stabilization

Medicinal

The plant's growth and nutrient uptake can help stabilize pH by consuming excess organic matter and producing oxygen, indirectly supporting a healthier aquatic environment for fish. [source]

This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.

Harvest Tips

Amazon Sword does not produce a harvestable crop. Propagation is done by removing and replanting runners. Trim or thin outer leaves periodically (every 2-4 weeks) to improve water circulation, remove senescent foliage, and encourage bushier growth. Remove entire runners if propagation is not desired.

Fun Facts

🌱 Amazon Sword can grow emersed (above water) in high-humidity paludariums, producing different leaf morphology—narrower, more upright leaves—compared to its submerged form.
🌱 The plant's scientific name, Echinodorus, derives from Greek words meaning 'hedgehog' and 'gift,' referring to the spiky seed pods it produces when flowering emersed.
🌱 In its native South American habitat, Amazon Sword grows along riverbanks and in flooded forests, where it can reach impressive heights of 20+ inches and produce delicate white flowers above the waterline.

Want personalized planting timelines?

Get started free