Plant atlas

Geographical Origin and Habitat: Glossostigma elatinoides is native to Australia, New Zealand, and Tasmania. It grows mainly in swampy areas, muddy banks of rivers and lakes, and regularly flooded zones, where it forms dense emersed or submerged carpets depending on the water level fluctuations.

Taxonomy & Genetics: It belongs to the Phrymaceae family and is one of the most iconic foreground plants in modern aquascaping, made famous worldwide by Takashi Amano in the 1990s. Genetically, it is programmed to expand horizontally via creeping runners when it detects intense light radiation.

Physical Structure: It features an extremely low creeping structure, with thin stems growing horizontally along the ground, anchoring at every node via adventitious roots. The leaves are tiny, opposite, spatula- or tongue-shaped, and grow in pairs along the runners to create a continuous carpet.

Color & Texture: The color is a fresh, bright light green that reflects light beautifully. The texture of the lawn it forms is dense, smooth, and uniform, providing an extraordinary visual contrast with dark rocks, driftwood, and fine-leaved or red plants.

Lighting & CO2: Requires very strong lighting to maintain its creeping growth habit; if light is insufficient, the plant will start growing vertically in search of light, losing its carpeting effect. CO2 injection is indispensable to support its accelerated metabolism.

Nutrition & Substrate: A fine, light, fertile substrate (such as aquasoil) is essential to allow the delicate roots to penetrate easily. It requires abundant macro and micronutrients (especially iron and nitrogen) in both the substrate and

Water Chemistry: Prefers soft and slightly acidic water, with a pH between 5.0 and 7.2, but also tolerates moderately hard water. The optimal temperature is between 15 and 28 °C; excessively high temperatures (above 29 °C) slow growth and can cause the carpet to rot.

Space Management & Placement: It is the ultimate foreground plant. It should be planted by inserting small clumps of runners spaced 2-3 cm apart into the substrate using precision tweezers; within a few weeks, the clumps will connect to cover the entire floor.

Pruning: When the carpet becomes too thick (over 2-3 cm), it must be pruned drastically by shearing the surface with wave scissors. This operation prevents the lower layers from suffocating and the entire lawn from detaching from the substrate.

Risks & Diseases: The main risk is the development of filamentous algae or cyanobacteria within the carpet if water circulation is poor or nutrients are unbalanced. In case of iron deficiency, the tiny leaves tend to become translucent or whitish.