Echinodorus major Care Guide
Echinodorus major is a large Brazilian sword with translucent, undulate light-green leaves, a classic specimen rosette for medium to large aquariums.
Compiled by Aquairi from published sources · Published · Updated
Overview
Echinodorus major is a sword plant in the family Alismataceae, native to eastern Brazil. It is a medium to large rosette with light-green, translucent submersed leaves of narrow oblanceolate form and an undulate (ruffled) margin. It is grown as a specimen plant, most often used in the middle ground of medium to large tanks, and can reach around 60 cm in good conditions.
Taxonomy
- Family: Alismataceae
- Genus: Echinodorus
- Scientific name: Echinodorus major
Habitat
The species is found in the eastern part of Brazil, where it grows mostly submersed in shallow rivulets. Like other Echinodorus it is a wetland plant that can also grow emersed when water levels fall.
Tank requirements
- Temperature: 22-28 °C (72-82 °F); reported tolerance 18-28 °C, optimum 24-26 °C
- pH: 6.0-7.5
- GH: 3-14 °dGH
- Lighting: medium; tolerates variable light with good substrate
- CO2: not necessary, but enhances growth significantly
- Growth rate: medium
- Maximum height: about 50 cm (up to 60 cm)
- Placement: midground to background specimen
Planting and care
As a heavy root feeder it needs a nutrient-rich substrate, which lets it tolerate fairly variable lighting. Added CO2 significantly enhances growth, although it is not necessary. Given its eventual size, it is best given space as a solitary specimen rather than crowded among other plants.
Propagation
Propagation is by proliferating inflorescences and by adventitious rosettes that form on the rhizome, which can be separated and replanted once rooted.
Propagating Echinodorus major (Ruffled Sword)
Overview
Echinodorus major is a large Brazilian sword plant that grows as a rosette rather than a stem plant, so it is not propagated by topping or cuttings. Like the rest of the Echinodorus genus, it is an annual or perennial aquatic that grows emersed, floating-leaved or seasonally submersed, with leaves ranging from linear to lanceolate to ovate on triangular petioles.
Because it forms a single crown, multiplication relies on the plant's natural asexual habit: producing new daughter plants on its flowering stems and dividing the established crown.
Propagation Method: Adventitious Plantlets and Division
For the Echinodorus genus, "propagation is by division or by adventitious new plants developing on submerged flowering stems." When the inflorescence forms submersed, small plantlets develop instead of flowers, giving you ready-made daughter plants along the stalk.
- Adventitious plantlets — daughter plants that sprout at the whorls of a submerged flower stalk (inflorescence).
- Crown / rhizome division — splitting an old, multi-crowned mother plant into separate rooted sections.
Step-by-Step
- Let a healthy, mature rosette push up a flower stalk; keep the stalk submersed so it forms plantlets rather than emersed flowers.
- Wait until each plantlet has several leaves and its own short roots before separating it.
- Pinch or cut the plantlet free from the stalk and plant it in nutrient-rich substrate, burying only the roots and leaving the crown exposed.
- To divide instead, lift the mother plant, find natural splits where multiple crowns have formed, and cut through the rhizome so each piece keeps roots and leaves.
- Replant each division, push a root tab beneath it, and give the new plants a few weeks to anchor before any trimming.
Conditions for Healthy Growth
Echinodorus plants prefer good light and grow best in a deep, nutrient-rich substrate. Echinodorus major is a heavy root feeder, so a deep bed with root tabs matters more than the water column. Aim for medium light, 22-28 degrees C, pH 6.0-7.5; CO2 is not required but supports faster, denser growth.
Maintenance
Remove yellowing or melting outer leaves at the base, top up root tabs periodically since this is a high-nutrient-demand plant, and thin the rosette if it shades plants behind it. Keep the crown clear of substrate so it does not rot.
Common Challenges
- No plantlets — the flower stalk grew emersed; keep it underwater to trigger adventitious plantlets.
- Stunted or pale leaves — usually root-zone starvation; add root tabs to the nutrient-rich substrate.
- Crown rot — caused by burying the crown; plant only the roots and leave the crown exposed.