Lemna trisulca L.

• Genus: Lemna
• Botanical Background: Described by Carl Linnaeus, this species has been a subject of study for its unique aquatic adaptations and rapid growth.

• Geographical Range: Native to temperate regions in Europe, Asia, and North America.
• Environment: Typically found in calm, nutrient-rich freshwater bodies such as ponds, lakes, and slow-moving streams where full to partial sunlight prevails.

Leaves

• Slender, oval-shaped, and display an elongated
• Ivy-like appearance
• Smooth texture
• Light green coloration

Inflorescence (Spadix & Spathe)

• Flowering is rare
• Inconspicuous flowers do not feature a typical spadix or spathe structure

Growth Habit

• Entirely aquatic, free-floating plant
• Reproduces primarily through vegetative budding, forming extensive mats on the water’s surface

Light Requirements

• Bright, indirect light
• Can tolerate partial direct sun in cooler conditions

Watering & Humidity

• Requires consistent water immersion with minimal concerns for additional humidity

Soil & Potting Mix

• Cultivated in shallow water systems rather than traditional soil-based media
• Nutrient-rich pond water or a water culture setup is ideal

Temperature & Fertilizer

• Prefers mild temperatures between 15-25°C
• Diluted aquatic fertilizer during the growing season

Division and Cuttings

• Propagation occurs almost exclusively through vegetative division, as new fronds bud directly from the parent plant

Seeds

• Seed production is rare 
• Not commonly used in cultivation due to the plant's effective asexual reproduction

Typical Issues

• Water quality issues or competitive algal blooms if nutrient levels are too high

Treatment Recommendations

• Regular water maintenance and control of nutrient levels are key
• Both chemical and organic treatments should be used sparingly and only when necessary

• Plays a role in water purification and ecological studies due to its capacity to absorb excess nutrients
• Valued in pond ecosystems for its ability to provide natural cover and reduce algae growth

• Unique frond pattern also adds visual interest

Wild Population Status

• Considered secure in its native range

Market Availability

• Readily available through aquatic plant nurseries
• Sometimes used in environmental restoration projects