Great Duckweed (Spirodela polyrrhiza)

Family: Lemnaceae | Edibility: Edible (1/5)

Spirodela polyrrhiza is a PERENNIAL at a fast rate. See above for USDA hardiness. It is hardy to UK zone 5. It is in flower in July. The species is monoecious (individual flowers are either male or female, but both sexes can be found on the same plant). Suitable for: light (sandy), medium (loamy) and heavy (clay) soils. Suitable pH: mildly acid, neutral and basic (mildly alkaline) soils. It cannot grow in the shade. It can grow in water.

Edible Parts & Harvest Seasons

Edible Parts: Leaves

Harvest Seasons: Early Summer, Fall, Late Summer, Spring

Flavor & Culinary Uses

The plant is sometimes used as a food. No more details are given. — The plant is sometimes used as a food.; No more details are given.

Habitat & North American Range

Still water in ditches and ponds. Eutrophic, quiet waters, in temperate to tropical regions. (Zone 4, Zone 5, Zone 6, Zone 7, Zone 8)