Source: Wikimedia Commons
Glossostigma
IntermediateGlossostigma elatinoides
The most popular foreground plant in aquascaping. Forms a lush green carpet by creeping along the substrate. Requires CO2 and strong light but grows explosively under optimal conditions. A Nature Aquarium staple.
Overview
Glossostigma elatinoides is a tiny aquatic plant in the family Phrymaceae, native to eastern Australia where it colonizes wetlands and shallow watercourses as an amphibious herb. One of the world's smallest aquatic plants, its oval leaves measure only a few millimeters. In the aquarium hobby it is prized as the quintessential foreground carpeting plant: under high light and pressurized CO2 injection (1–2 bubbles per second), dense mats of bright green creep horizontally across the substrate to form a flawless living carpet. Insufficient light causes upward growth rather than horizontal spreading, so strong illumination is non-negotiable. Thrives in nutrient-rich aquasoil; root-tab fertilizers further enhance density. Once established, it serves as the foundation for world-class Nature Aquarium layouts.
Source: Wikipedia (CC BY-SA 4.0)
Size of the Glossostigma
The Glossostigma grows to 1-3cm (height).
Temperature & humidity for the Glossostigma
The ideal temperature for the Glossostigma is 20〜28℃.
Basic Info
Origin
Eastern Australia
Size
1-3cm (height)
Temperature
20〜28℃
Watering & Fertilizer
CO2 injection required + liquid fert + substrate fert
Growing Tips
Lighting
High light essential. Insufficient light causes upward growth
CO2
Pressurized injection required. ~1-2 bubbles per second
Substrate & Attachment
Suits aquarium soil well, and substrate fertiliser is effective. An amphibious plant that grows both submerged and emersed, so emersed-grown stock can be converted to submerged growth.
Water Temperature & Quality
A water temperature of 20-28°C is suitable. To keep a dense carpet, stable water quality matters alongside light and CO2.
Trimming
Trim aggressively when thick. Regenerates from runners
Notes
Plant at 1cm intervals with tweezers into soil substrate
Glossostigma FAQ
QWhat is the growing difficulty level for Glossostigma?
Intermediate. A variety suitable for intermediate growers. Requires some cultivation experience and knowledge of environment management. Pay careful attention to temperature and humidity control.
QWhat is the ideal temperature for Glossostigma?
The ideal temperature for Glossostigma is 20〜28℃. Avoid sudden temperature changes and maintain a stable environment.
QHow large does Glossostigma get?
The mature size of Glossostigma is 1-3cm (height). This may vary slightly depending on cultivation environment and individual differences.
QHow should I water and fertilize Glossostigma?
Glossostigma: watering & fertilizer — CO2 injection required + liquid fert + substrate fert. Aim for appropriate frequency and amount.
QWhat is the typical price for Glossostigma?
The price of Glossostigma varies significantly by variety, characteristics, size, and lineage. Please check GrowerDirect's price guide for the latest market information.
Last updated: September 25, 2026
References & Sources
Edited & verified by: GrowerDirect Editorial Team
The classifications, regulations, and growing data on this page are created and verified based on the primary information database below.
Taxonomy & Authority
Regulations & Conservation Status
Domestic law: The second edition of the Ministry of the Environment / MAFF Invasive Alien Species List for ecosystem damage prevention (published 11 September 2026) lists Glossostigma elatinoides as No. 107, a "priority control" alien species (防除推進外来種). If it invades areas important for biodiversity, such as national parks or habitats of endangered species, it is to be controlled. It is not a designated Invasive Alien Species, and growing or selling it is not legally restricted. Plants in cultivation are not subject to control, but do not discard them outdoors or let them escape with aquarium waste water or stem and leaf fragments (the list asks that listed species are never released into the wild).
Sources: Ministry of the Environment Designated Invasive Species List (Invasive Species Act) / CITES Appendix II listed plant taxa (family and genus level)
Regulations may change. Always verify the latest information with the relevant authorities.
Related Species
Find listings for this species
Related Articles
Complete Guide to Aquatic Plant CO2 Systems | Practical Manual from Setup to Daily Maintenance
CO2 is an essential element for aquatic plants to perform photosynthesis. This article covers everything needed to cultivate fast-growing stem plants and red-tinted aquatic plants, from selecting CO2 injection systems, installing solenoid valve regulators, positioning diffusers, to daily maintenance.
Aquatic Plant Tank Used Soil and Substrate Disposal and Recycling Methods | Correct Disposal Methods and Reuse Tips
Explains the correct disposal methods for used substrate in aquatic plant tanks. Introduces the proper disposal procedures according to local municipal rules and the concept of reuse for short-term usage.
Beginner-Friendly Aquatic Plants That Grow Without CO2 Addition | Growing Conditions and Tank Layout Application
You can create a beautiful aquarium without expensive CO2 equipment. This guide covers everything from selecting aquatic plants that don't require CO2—which beginners can succeed with—to growing conditions and practical tank layout applications.
How to Care for Rotala and Bring Out Beautiful Red Color | Methods to Achieve Vibrant Red Through Light Intensity, CO₂, and Trimming
This guide explains the light intensity, CO₂, and fertilizer management needed to bring out red coloration in the popular Rotala genus used in aquatic plant layouts, as well as trimming techniques to maintain beautiful, lush growth.
🩺 Common diseases
Can't find the plant you're looking for?
Post your wishes for free and growers with matching plants will contact you with introductions.