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Spotless Watermeal

Wolffia arrhiza, Lemnaceae

Zones
5–11
Layer
Aquatic
Lifespan
Perennial
Growth
Fast

Guild Roles

Producer

Growing Conditions

Sun

Full Sun (optimal)

Water

High

Soil pH

5.5 – 7.5

Tolerances

Drought
Frost
Heat
Pest Resistance
Disease Resist.

Companion Plants

Water FernAzolla filiculoides
Nitrogen Fixation
Water LettucePistia stratiotes
Nutrient AccumulationWind Protection
RiceOryza sativa
Nutrient AccumulationPest Deterrent

Antagonistic Plants

Water HyacinthEichhornia crassipes

Water hyacinth completely blocks light needed by tiny watermeal and releases compounds toxic to small floating plants

Giant SalviniaSalvinia molesta

Smallest flowering plant competes with floating fern for surface area in warm waters

Uses

Functions

Water FiltrationFood

Edible Parts

Leaves

Common Questions

What zones does Spotless Watermeal grow in?

Spotless Watermeal grows in USDA hardiness zones 5 through 11.

What are good companion plants for Spotless Watermeal?

Good companions for Spotless Watermeal include Water Fern, Water Lettuce, Rice.

Design guilds with Spotless Watermeal and see companion relationships visually.

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