Marsilea angustifolia

Species description

Care, breeding and tankmates

Plant profile

Placement

Foreground

It is an ideal foreground or carpeting plant. It should be planted in small portions across the substrate to encourage it to spread and form a dense mat. While it can tolerate some shade, it grows more compactly and faster under moderate to high lighting.

Botanical form

Rhizome

In its submerged form, it typically produces single, tear-drop or spoon-shaped leaves on short stalks, resembling a small Glossostigma. Occasionally, it may produce two, three, or four-lobed leaves resembling a clover. Its dark green color provides a lush, natural-looking carpet.

Growth

Medium

The growth rate is moderate, especially when compared to faster carpeting plants like Glossostigma or HC Cuba. Once acclimated and if provided with CO2, it will steadily send out runners and cover the substrate. Its steady pace makes it easy to maintain once a carpet is formed.

Substrate

High

Marsilea angustifolia is a carpeting fern that requires a fine-grained, nutrient-rich substrate, such as powder-type aqua soil, to spread effectively. A substrate depth of 1.5 to 2 inches provides the perfect environment for its delicate horizontal runners to firmly root and create a dense mat. Adequate nutrients in the substrate are essential to trigger its transition from sparse vertical growth into a lush, creeping carpet.

Column fertilization

Recommended

Liquid fertilization is beneficial but not strictly necessary if a rich substrate is used. A basic all-in-one fertilizer will provide enough nutrients for steady growth. It is less prone to algae than faster-growing, nutrient-hungry carpeting plants.

Root fertilization

Required

A nutrient-rich substrate, such as aquasoil, is highly recommended for optimal growth and carpeting speed. It draws the majority of its nutrients through its extensive network of roots and runners. Root tabs can be used if planted in inert gravel or sand.

Trimming

Occasional

Trimming is rarely needed until the carpet becomes very thick and layers start piling on top of each other. When it gets too thick, it can be thinned out by snipping the runners or trimming the leaves down. Careful thinning prevents the lower layers from dying off and detaching from the substrate.

Propagation

Runners

Propagation occurs naturally as the plant sends out creeping runners across the substrate. To propagate manually, simply cut a section of the runner with a few leaves and replant it elsewhere. These small cuttings will quickly establish and begin spreading.

Sensitivity

Moderate

It is a very hardy carpeting plant that can tolerate low light and no CO2, though it will grow much slower and slightly taller in such conditions. It is forgiving of water parameter fluctuations. It is an excellent choice for beginners looking for a reliable carpet.

Layout role

Foreground

It serves as an excellent, low-maintenance carpeting plant for the foreground. Its dark green, clover-like leaves provide a very natural, slightly wild look to the aquascape. It is often used as an alternative to Glossostigma in lower-tech setups or where slower growth is desired.