Echinodorus tenellus

Species description

Care, breeding and tankmates

Plant profile

Placement

Midground

This plant is classically used in the extreme foreground of the aquarium, where it forms dense, lawn-like carpets. It should be planted in small portions spaced evenly across the substrate to encourage quick, uniform spreading. Avoid placing it in heavily shaded areas, as it requires unimpeded access to light to stay compact.

Botanical form

Rosette

Often recognized as one of the smallest sword plants, it features very narrow, grass-like leaves that form delicate little rosettes. Depending on environmental factors, leaves can remain a vibrant light green or develop subtle reddish-brown tips. Its low-growing, grassy aesthetic makes it a popular choice for nature-style aquascapes.

Growth

Medium

Under high light and CO2 injection, it boasts an incredibly fast growth rate, quickly sending out numerous runners. Without CO2, its growth is considerably slower and the plant may struggle to form a cohesive, dense carpet. In optimal setups, it can cover the foreground in just a few weeks, requiring regular maintenance.

Substrate

Medium

Column fertilization

Recommended

Liquid fertilization should be maintained to ensure the runners and developing plantlets receive adequate nourishment. While its root system is extensive, water column dosing helps keep the delicate leaves vibrant and healthy. Consistent dosing prevents older leaves from succumbing to nutrient deficiencies as the carpet thickens.

Root fertilization

Recommended

A nutrient-rich substrate is vital, as this plant relies heavily on root uptake to fuel its rapid runner production. Aqua soil or a well-mineralized dirted substrate provides the perfect foundation for a thriving carpet. Without adequate substrate nutrition, the plant's spread will slow down significantly and growth will appear weak.

Trimming

Occasional

To maintain a neat and compact carpet, regular trimming is necessary, ideally by cutting the leaves horizontally like mowing a lawn. This encourages the plant to stay low and promotes even denser runner growth from the base. Stray runners creeping into areas meant for other plants should be pinched off or snipped regularly.

Propagation

Runners

Propagation is incredibly simple, as the plant naturally reproduces by sending out a network of lateral runners. A single mother plant will quickly spawn dozens of daughter plants across the substrate. To transplant or share, simply snip the runner connecting the plants and carefully uproot the individual rosettes.

Sensitivity

Moderate

It is somewhat sensitive to being heavily shaded; if taller plants block its light, it will grow leggy and sparse. It can also be susceptible to algae growth, particularly hair algae, if the nutrient balance in the tank is off. Overall, once acclimated, it is a sturdy foreground plant provided its light and CO2 needs are met.

Layout role

Foreground, Midground, group

It is widely considered one of the premier foreground carpeting plants, offering a wilder, more grassy texture than standard carpeting species. It works beautifully transitioning from open sand to larger midground plants or weaving between hardscape stones. Its delicate texture contrasts perfectly against broader-leaved plants and dark substrates.