Sagittaria subulata

Species description

Care, breeding and tankmates

Plant profile

Placement

Midground

Commonly used as a foreground carpet or a midground grassy accent. Plant individual rosettes slightly apart to allow space for runners to weave through the substrate. It can sometimes grow unexpectedly tall, so be prepared to move it back if necessary.

Botanical form

Rosette

Features bright green, strap-like leaves that grow in a rosette. The leaf width can vary, but they are typically somewhat narrow and flexible. Under optimal conditions, it forms a dense, lush grassy mat.

Growth

Fast

Exhibits a fast growth rate, quickly covering the substrate with runners. Its growth habit can be somewhat unpredictable; it may stay short and carpet-like or suddenly grow tall leaves reaching the surface. High light generally keeps it more compact.

Substrate

High

Column fertilization

Recommended

While it absorbs some nutrients from the water column, it is not heavily reliant on it. Occasional dosing of a comprehensive liquid fertilizer supports overall health. If the leaves turn pale, an iron or micronutrient supplement may be needed.

Root fertilization

None

Root feeding is key to its success. A nutrient-rich aquasoil or the addition of root tabs in inert gravel will dramatically improve its growth and density. Strong roots are necessary to support its extensive network of runners.

Trimming

Occasional

Maintenance mainly involves controlling its spread by snipping unwanted runners. Remove older, decaying leaves by pinching them off near the crown. Do not trim the leaves horizontally, as this will cause them to die back.

Propagation

Runners

Propagates aggressively via runners that shoot out from the parent plant. A single plant can quickly colonize a large area. New plantlets can be easily detached and relocated once they have a few leaves and roots.

Sensitivity

Moderate

Very hardy and tolerant of a wide variety of water parameters, including harder water. It is a robust plant that rarely suffers from melting. An excellent, forgiving choice for beginners establishing their first planted tank.

Layout role

Midground, Background

Classic foreground plant for creating a wild, natural-looking grassy meadow. Its slightly messy, uneven growth pattern is perfect for nature aquariums. Also useful for softening the transitions between hardscape elements and the substrate.