Echinodorus paniculatus Care Guide
Echinodorus paniculatus is a large traditional Amazon sword with long lanceolate leaves, one of the original 'Amazon swords' of the South American sword complex.
Compiled by Aquairi from published sources · Published · Updated
Overview
Echinodorus paniculatus is a large sword plant in the family Alismataceae, sold for decades as one of the original 'Amazon swords'. It forms a dense rosette of long, lanceolate, bright-green leaves with slightly wavy margins that can reach around 40 cm. It is grown as a background specimen and is generally undemanding, making it suitable for beginners.
Taxonomy
- Family: Alismataceae
- Genus: Echinodorus
- Scientific name: Echinodorus paniculatus
- Note: long used as a trade name within the Amazon sword (E. grisebachii) complex
Habitat
The plant comes from tropical South America, growing in slow-moving rivers, ponds and marshes. Like other Amazon swords it is a wetland species that can grow either submersed or emersed depending on water level.
Tank requirements
- Temperature: 22-28 °C (72-82 °F)
- pH: 6.0-7.5
- GH: 3-14 °dGH
- Lighting: moderate to high
- CO2: not required, but enhances growth
- Growth rate: medium
- Maximum height: about 50 cm
- Placement: background; minimum tank around 60 L, 100 L or larger recommended
Planting and care
As a heavy root feeder it needs a nutrient-rich substrate, with aqua soil or root tabs supplying nutrients in inert gravel. Adequate iron supply prevents leaf yellowing. Moderate to high light encourages faster growth and denser foliage. Given its eventual spread it is best placed at the back of medium to large aquariums.
Propagation
Propagation is vegetative, by adventitious plantlets that form on the flower stalks. Plantlets are separated and replanted once they have developed their own roots.
Propagating Echinodorus paniculatus (Amazon Sword)
Overview
Echinodorus paniculatus is a large, traditional Amazon sword with elongated lanceolate leaves, one of the original swords before the bleherae rename. It grows as a perennial rosette and, like other Echinodorus, can grow submersed, emersed or seasonally. Mature plants form a crown and develop a rhizome that can carry new plantlets.
This is a forgiving, beginner-friendly species, but it is still a heavy root feeder. Echinodorus plants prefer good light and grow best in a deep, nutrient-rich substrate, and these conditions also encourage the flowering stems used for propagation.
Propagation Method
Echinodorus propagation is by division or by adventitious new plants developing on submerged flowering stems. A large sword will send up a flower stalk; on the submersed section adventitious plantlets grow, and if the inflorescence forms submersed, small plantlets form instead of flowers. The maturing rhizome can also be divided.
Step-by-Step
- Let a mature plant produce a flowering stem and keep that stem submersed.
- Adventitious plantlets will grow along the submerged part of the stalk; let each form leaves and roots in the water.
- When a plantlet has a root system, remove it from the stalk and plant it in nutrient-rich substrate.
- Once all plantlets have been removed, cut away the spent stalk.
- To divide the rhizome: when trimming old leaves, cut off a rhizome section that carries a crown or new plantlets.
- Replant each piece with roots in deep substrate and the crown sitting above the soil.
Conditions for Healthy Growth
- Deep, nutrient-rich substrate to satisfy this heavy root feeder.
- Good light to drive growth and flowering.
- Warm tropical temperatures (roughly 22-28 C).
- Soft to moderately hard water around neutral pH; CO2 is not required.
Maintenance
Remove old or damaged outer leaves at the base so light reaches the crown and new growth. Top up root nutrients periodically. Leave a flowering stalk in place until its plantlets have rooted and been separated, then trim it off at the base.
Common Challenges
- Detaching plantlets too early before roots form, which causes them to melt - wait for roots.
- Poor or yellowing growth in a thin substrate - feed the roots.
- Burying the crown too deep after division, which prevents rooting - keep the crown above the substrate.