Stargrass: Heteranthera zosterifolia
A beautiful stem plant with bright green, star-shaped leaves that forms dense, bushy thickets in high-light setups.

Stargrass
Stargrass, scientifically known as Heteranthera zosterifolia, is a captivating aquatic plant celebrated for its lush, grassy appearance and adaptability in freshwater aquascapes. With elongated, narrow leaves that can reach lengths of up to 10 inches, Stargrass forms a dense backdrop that mimics the natural underwater habitats. This plant flourishes in various light conditions and provides shelter for smaller fish and invertebrates, making it an essential component of many aquascapes.
Care Guide
To maintain healthy growth and vibrant coloration of Stargrass, the following care guidelines should be observed:
- Lighting: Require moderate to high-light conditions, typically 2-3 watts per gallon. Ensure a photoperiod of 10-12 hours to promote optimal growth.
- Water Parameters: Ideal temperature ranges between 72°F to 82°F (22°C to 28°C) and a pH level of 6.0 to 7.5.
- Trimming: Regular trimming is essential to prevent overcrowding and encourage bushier growth. Trim plants every 4-6 weeks, cutting back to maintain desired height.
- Planting: Plant in groups for the best visual effect, allowing adequate spacing for growth.
Nutrient Requirements
Stargrass thrives in nutrient-rich environments. Consider the following to ensure robust development:
- Light: As mentioned, moderate to high lighting is critical. Insufficient light can lead to leggy growth and diminished health.
- CO2: Supplementing with CO2 is highly beneficial, especially in high-light setups. A target of 20-30 mg/L is ideal.
- Fertilization: A balanced liquid fertilizer or root tabs can support growth. Ensure regular dosing, particularly during the plant's growth phase.
Natural Biomes
Stargrass is typically found in the tranquil waters of various natural biomes, such as:
These regions provide a diverse range of conditions that contribute to the plant's resilience and adaptability.
Livestock Compatibility
Stargrass is compatible with a wide range of aquatic livestock, enhancing aquarium harmony. Suitable inhabitants include:
- Fish: Tetras, Guppies, and Dwarf Cichlids flourish alongside Stargrass, utilizing its foliage for cover and breeding.
- Shrimp: Neocaridina and Caridina species thrive in environments enriched with Stargrass, which serves as a source of food and shelter.
This plant not only adds aesthetic value but also promotes biodiversity within the aquatic ecosystem, making it a favorite among aquascaping enthusiasts.