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Datasheet
| Aquarium Compatible | yes |
| Plant Outdoor | unknown |
| Plant Emersed Growth | yes |
| Plant Growth | fast |
| Temperature Tolerance | 10°C / 50.00°F - 30°C / 86.00°F |
| Temperature | 20°C / 68.00°F - 25°C / 77.00°F |
| Carbonate Hardness | 0-21 kh |
| pH Value | 5-8 ph |
| Light | medium-high |
| Carbon Dioxide (CO2) | 15-40mg/lmg/l |
| Nitrate (NO3-) | 10-50mg/lmg/l |
| Phosphate (PO43-) | 0.1-3mg/lmg/l |
| Potassium (K+) | 5-30mg/lmg/l |
| Iron (Fe) | 0.01-0.5mg/lmg/l |
General Description
Heteranthera zosterifolia, commonly known as Stargrass, is a striking aquatic plant characterized by bright green lanceolate leaves. Originating from Brazil, it typically thrives in stagnant waters and swampy regions. This plant has been favored in the aquarium hobby for many years due to its decorative appeal in Dutch style aquaria and nature aquaria. Referred to as star grass colloquially, it serves as a useful water quality indicator, with transparent leaves indicating a lack of nitrogen and a darker green hue signaling a phosphorous deficiency.
Aquarium Suitability
Stargrass is commonly available commercially and from other aquarists, making it easily accessible to enthusiasts. Ideally suited for aquariums, it is classified as an easy-to-care-for plant that grows well at medium light intensities without additional CO2 fertilization. However, for optimal growth and larger leaves, strong lighting and CO2 fertilization are recommended. Stargrass is well-suited for both foreground and background placement in aquariums and is known for its fast growth rate.
Demands and Hardiness
Stargrass, known for its bushy and well-branched appearance, is a relatively undemanding plant that can flourish in a wide range of water conditions. It requires a moderate to high light intensity and thrives in temperatures between 20-25°C. Stargrass can tolerate a pH range of 5-8 and a wide variation in carbonate hardness. While it is unsuitable for outdoor use in colder climates, it can be propagated easily through cuttings.
Aquascaping & Usage
In aquascaping, Stargrass can be utilized as a striking background or midground plant, adding visual interest and contrast to the aquarium. When allowed to grow out of the water, it may produce beautiful blue flowers, enriching the overall aesthetic of the aquascape.
Propagation
The propagation of Stargrass is straightforward and can be achieved through cuttings. By trimming and replanting cuttings, enthusiasts can easily propagate this vibrant aquatic plant within their aquarium setup.
Habitat and Distribution
Stargrass, belonging to the genus Heteranthera and the family Pontederiaceae, is native to Brazil and is commonly found in stagnant waters and swampy regions. Its adaptability to varying water conditions and easy propagation make it a popular choice among aquatic plant enthusiasts globally.