Spirodela oligorrhiza (Kurz) Hegelm.

• Genus: Spirodela
• Botanical Background: Described by Kurz and later revised by Hegelmeyer, this species has long been noted for its diminutive size and rapid reproduction, attracting the attention of botanists interested in aquatic plants.

• Geographical Range: Indigenous to regions in South and Southeast Asia and thrives in calm freshwater bodies
• Environment: Naturally grows in warm, nutrient-rich waters with moderate to high humidity; favors shallow, still water with soft substrates rather than flowing streams.

Leaves

• Small, oval, green fronds that float effortlessly on water
• Fronds have a smooth texture
• Uniform green coloration

Inflorescence (Spadix & Spathe)

• Flowering is rare
• Small spadix and a reduced spathe

Growth Habit

• Aquatic, free-floating plant
• Primarily reproduces vegetatively
• Does not form tubers or extensive rhizomes but spreads through budding daughter fronds

Light Requirements

• Bright, indirect light or partial shade
• Avoid prolonged exposure to intense direct sunlight to prevent overheating

Watering & Humidity

• Constant access to clean water
• Regular water replacement is key to preventing stagnation

Soil & Potting Mix

• Cultivated in shallow containers filled with nutrient-rich water

Temperature & Fertilizer

• Optimal growth is observed between 20°C and 30°C
• Diluted aquatic fertilizer can be applied periodically during the growing season

Division and Cuttings

• Primary mode of propagation is vegetative
• Daughter fronds naturally pinch off from the mother plant, forming new colonies with minimal intervention
  

Seeds

• Flowering and seed production are uncommon
• Vegetative propagation the preferred method

Typical Issues

• Occasional algal overgrowth or fungal infections

Treatment Recommendations

• Ensuring clean water and adequate circulation
• Organic treatments, such as diluted hydrogen peroxide

• Plays an important role in nutrient cycling in freshwater ecosystems and has potential applications in wastewater treatment studies
• Ease of cultivation and low maintenance

• Minimal care requirements and ecological benefits

Wild Population Status

• Not currently considered endangered

Market Availability

• Widely available through aquatic plant nurseries and specialized online retailers