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Wolffia arrhiza
Also called Rootless duckweed, Spotless Water Flaxseed, Rootless Duckweed, Spotless Watermeal
Spotless watermeal is a tiny floating aquatic plant, the smallest flowering plant known, that forms dense green mats on still ponds. It is grown as a pond or aquarium plant and needs only calm, nutrient-rich water.
Wolffia arrhiza, commonly known as rootless duckweed or spotless watermeal, is a species of flowering plant in the family Araceae, which includes other water-loving plants such as Lemna and Pistia. It is the smallest vascular plant on Earth. Native to Europe, Africa, and parts of Asia, it has also become naturalised in various other regions around the globe.
Text excerpted from the Wikipedia article Wolffia arrhiza by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.
The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
