Mueller's water-starwort

Mueller's water-starwort (Callitriche muelleri) is a delicate aquatic plant species belonging to the Plantaginaceae family. Known primarily in the botanical community as an adaptable hydrophyte, it serves as a specialized crop for aquatic environments and ornamental aquascaping.

The plant is native to the regions of Australia and New Zealand, where it colonizes shallow, slow-moving freshwater systems and moist riparian habitats. Its range of cultivation is largely concentrated within the professional aquarium industry and ecological restoration projects focused on wetland vegetation.

Botanically, it is characterized by slender, branched stems and small, opposite leaves. The plant exhibits phenotypic plasticity, meaning its leaf morphology adapts based on environmental conditions; submerged leaves tend to be elongated and thin, whereas emersed leaves often display a broader, rosette-like arrangement.

Climate and agro-technical requirements involve maintaining stable water parameters, typically preferring soft to medium-hard water with temperatures ranging from 18°C to 24°C. Proper cultivation requires a nutrient-rich substrate and adequate trace elements, alongside supplemental CO2 for those looking to maximize growth density in controlled environments.

Its primary хозяйственное use lies in water purification and aesthetic decoration of aquatic setups. As a biological filter, it effectively contributes to nutrient cycling by extracting nitrates. Pests are minimal, though the plant can be susceptible to fungal rot if stagnant water conditions lead to oxygen depletion at the root level.

• Family: Plantaginaceae
• Light preference: Moderate to high
• Optimal pH: 6.5–7.5
• Propagation: Stem cuttings