Araceae
Rootless duckweed
Wolffia arrhiza
Also known as Wolffia michelii, Lenticula arrhiza, Bruniera vivipara, Lemna arrhiza
Tropical Plants · Edibles & Herbs · Indoor Plants · Native Plants · Aquatic · Floating · Duckweed · Pond · Water Plant · Edible · Micro Plant · Novelty · Indoor Water Garden · Araceae
Rootless duckweed is a tiny aquatic plant that floats freely on the surface of still or slow-moving water and requires no soil whatsoever. Place it in a container or pond with clean, nutrient-rich water and provide moderate to bright indirect light. It multiplies rapidly, so thin the colony regularly to prevent it from shading out other aquatic plants.
Growing conditions
The details behind the basics
- Daily light
- 6 hours
- Watering
- Keep fully submerged or floating in still or slow-moving water at all times · Continuous aquatic environment — refresh water every 7-14 days
- Maintenance
- Low
- Soil
- loam
- Soil pH
- 7–7.5
- Temperature
- -20°F to 90°F
- Cycle
- Perennial
- Propagation
- Seed
Hardiness
USDA 5a-10b
Form & growth
Mature size and habit
- Mature height
- 12 in – 3 ft
- Spread
- 18 in
- Growth rate
- Moderate
- Root depth
- Medium
- Flowers
- No
- Foliage
- Medium
Ecology & origin
Where it belongs and what it brings
- Native to
- Algeria, Angola, Austria, Baltic States, Bangladesh, Belgium, Benin, Botswana, Brazil Southeast, Bulgaria, Burundi, California, Canary Is., Cape Provinces, Central European Rus, Corse, Czechoslovakia, East European Russia, Ethiopia, France
Sources: trefle, usda
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