Giant Duckweed, Common Duckmeat
Spirodelapolyrrhiza

Synonym:Lemna bannatica

Synonym:Lemna major

Synonym:Lemna maxima

Synonym:Lemna orbicularis

Synonym:Lemna orbiculata

Category
Ponds and Aquatics
Ferns

Water Requirements

Sun Exposure
Full Sun
Sun to Partial Shade
Light Shade

Foliage

Foliage Color

Height
under 6 in. (15 cm)

Spacing

Hardiness
USDA Zone 3b: to -37.2 °C (-35 °F)
USDA Zone 4a: to -34.4 °C (-30 °F)
USDA Zone 4b: to -31.6 °C (-25 °F)
USDA Zone 5a: to -28.8 °C (-20 °F)
USDA Zone 5b: to -26.1 °C (-15 °F)
USDA Zone 6a: to -23.3 °C (-10 °F)
USDA Zone 6b: to -20.5 °C (-5 °F)
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
USDA Zone 10a: to -1.1 °C (30 °F)
USDA Zone 10b: to 1.7 °C (35 °F)
USDA Zone 11: above 4.5 °C (40 °F)

Where to Grow

Danger
N/A

Bloom Color
Inconspicuous/none

Bloom Characteristics

Bloom Size

Bloom Time
Mid Summer
Late Summer/Early Fall

Other details
May be a noxious weed or invasive

Soil pH requirements

Patent Information
Non-patented

Propagation Methods

Seed Collecting