Hemianthus micranthemoides

Scientific name: Hemianthus micranthemoides

Family: Scrophulariaceae

Usual maximum size in aquariums: 20 - 40 cm (7.87 - 15.75 inch)

014

Recommended pH range for the species: 6.3 - 7.2

Recommended water hardness (dGH): 4 - 18°N (71.43 - 321.43ppm)

0°C 32°F30°C 86°F

Recommended temperature: 19 - 27 °C (66.2 - 80.6°F)

Reproduction of the plant: Cuttings

Origin (in the wild): North America

How fast these plants grow: Fast

Recommended substrate: Fine gravel

Demands on lighting: Bright

Ideal placement in a fish tank: Background

Common Names

Pearl Grass, Baby’s Tears

Propagation

Hemianthus micranthemoides, also known as Pearl Grass, is easy to propagate. To propagate, take a cutting from any stem of the mother plant, removing the lower leaves. Insert the stem into the substrate gently to avoid damaging it. Roots will form quickly, and growth will be apparent within a few weeks. Many aquarists lay the stems horizontally on the substrate in the foreground of the tank to create a dense carpet effect.

Difficulty

This plant is categorized as medium difficulty because it requires specific conditions to thrive. While not particularly demanding, achieving the lush, carpeted look often seen in aquascapes with Hemianthus micranthemoides requires consistent, bright lighting, and preferably a nutrient-rich substrate. Although a CO₂ system is not essential, adding one will significantly enhance growth and vitality, making maintenance easier and more rewarding.

Short Description

Hemianthus micranthemoides requires bright lighting to thrive and should not be shaded by other taller aquatic plants, as insufficient light can stunt its growth and affect its lush appearance. While it does not require a CO₂ system for basic growth, introducing CO₂ will notably accelerate its development and improve overall health. Despite being believed to be extinct in the wild, Hemianthus micranthemoides is widely available through commercial aquatic growers, ensuring that this beautiful plant can still be enjoyed by aquarium enthusiasts. It is ideal for creating a vibrant green carpet in the foreground of an aquascape, contributing to a dynamic and three-dimensional underwater landscape.