Ammannia gracilis

Species description

Care, breeding and tankmates

Plant profile

Placement

Midground

Ideal for the midground or background. Needs plenty of unobstructed light, so do not plant it in the shadow of larger hardscape or overhanging foliage.

Botanical form

Stem

Features large, wavy, opposite leaves that are broadly lanceolate. The plant stems are thick and fleshy, often taking on a pale green to pinkish hue. Its large leaves create a bold texture.

Growth

Fast

Fast-growing under optimal conditions (high light and CO2). It can quickly reach the surface, making regular maintenance necessary to keep it looking tidy.

Substrate

High

Ammannia gracilis is a nutrient-hungry stem plant that exhibits its best form and intense red coloration when rooted in a fertile, active substrate. It develops an extensive root network that aggressively mines the soil for iron, nitrogen, and trace elements. To properly anchor its large, buoyant stems, the substrate should be at least 6 centimeters deep and composed of fine to medium-sized porous granules. Without a nutrient-dense foundation, the plant may suffer from bottom rot and progressive leaf loss along the lower stem.

Column fertilization

Recommended

Responds very well to water column fertilization. Daily dosing of a complete liquid fertilizer ensures consistent growth and prevents pale or curled new leaves.

Root fertilization

Recommended

Highly root-dependent for large, robust stems. Plant in a nutrient-rich aquasoil or supplement inert gravel with high-quality root tabs regularly.

Trimming

Regular

Trim by removing the top portion and replanting it. Be cautious with the lower stump; if it doesn't receive enough light, it may rot instead of producing side shoots.

Propagation

Cuttings

Propagated by stem cuttings. Cut a healthy shoot of at least 4 inches and replant. Side shoots will eventually form on healthy trimmed stumps.

Sensitivity

high

Extremely sensitive to low light and CO2 deficiencies. Can easily suffer from lower leaf decay and stem rot if water circulation or nutrient levels drop.

Layout role

accent, Midground, Background

A classic Dutch aquascape plant used to create vibrant red streets or focal bushes. Its large leaves provide excellent contrast against fine-leaved background plants.