Echinodorus macrophyllus

Scientific name: Echinodorus macrophyllus

Family: Alismataceae

Maximum size reached under cultivation conditions: 30 - 50 cm (11.81 - 19.69 inch)

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Recommended pH range for the species: 5.7 - 7.7

Recommended water hardness (dGH): 0 - 18°N (0 - 321.43ppm)

0°C 32°F30°C 86°F

Recommended temperature: 20 - 28 °C (68 - 82.4°F)

Reproduction of the plant: Rhizome

Origin (in the wild): South America

How fast these plants grow: Normal

Recommended substrate: Fine gravel

Demands on lighting: Bright

Ideal placement in a fish tank: Background

🌿 Family

Alismataceae

🏷️ Common Name

Broadleaf Sword, formerly sold as Echinodorus radicans

🌍 Origin

South America; native to Brazil, Guyana, and surrounding regions. It grows in wetlands, along riverbanks, and in temporarily flooded zones.

📍 Planting Area

Background in large aquariums or emersed in paludariums and pond margins. The plant develops tall, leathery leaves and performs best when grown above water with its roots submerged.

💡 Lighting Requirements

Bright light is recommended to support healthy leaf growth and coloration. In emersed conditions, natural or strong artificial light is preferred.

🌱 Propagation

Echinodorus macrophyllus reproduces by forming adventitious plantlets on flower stalks, and by rhizome division. To propagate, gently separate the young plantlets or divide sections of the rhizome that show new growth. Replant into nutrient-rich substrate and provide stable humidity or submersion at the root zone.

⚙️ Difficulty

Medium. While it tolerates a range of water conditions, it grows best when allowed to remain emersed. Fully submerged cultivation is possible, but temporary and usually results in slow decline unless conditions are optimal.

📝 Short Description

Echinodorus macrophyllus is a large, bold-leaved sword plant often used in open-top aquariums, paludariums, and around ponds. It can produce flower stalks above the waterline, especially under stable and bright conditions. When kept emersed, spray the leaves regularly to prevent drying. Though sometimes sold for underwater planting, it is best suited for semi-aquatic environments. Its strong, structural foliage makes it ideal for natural-looking displays.

❓ FAQs

• Can Echinodorus macrophyllus live fully submerged?

  It can survive submerged for a limited time, but it grows best in emersed or semi-aquatic setups where its leaves can extend above the surface.

• Does this plant flower underwater?

  No, flowering occurs only in emersed conditions. Flowers appear on tall stalks that emerge above the waterline.

• What is the best setup for long-term growth?

  A paludarium, riparium, or pond edge with nutrient-rich substrate and consistent moisture at the base offers the best environment.

• Is Echinodorus macrophyllus suitable for beginners?

  It can be suitable if kept emersed. Submerged culture may be more challenging, especially without high light and stable nutrients.