Swollen duckweed is a tiny free-floating aquatic plant that forms green mats on still or slow water. It is grown mainly in ponds and aquaria, and it needs still water and plenty of sun.
Family
Araceae (Arum family)
Grows as
Aquatic
Light
Full sun
Water
Grows floating on water; keep the water still or slow-moving and fed with nutrients.
Soil
None; grows free-floating on water, though it can also grow on mud or damp rock.
Temperature
Temperate; tolerates cool conditions and dies back in hard frost, not commonly tropical.
How easy
Easy
Safety
Not known to be toxic
Native range
Europe to C. Asia and NW. India, Africa, America
Climate
temperate
About
Lemna gibba, the gibbous duckweed, swollen duckweed, or fat duckweed, is a species of Lemna (duckweed). It has a simple plant body, known as a thallus, which floats on the surface of the water and measures 3–5 mm (0.12–0.20 in) in diameter. A single root hangs down into the water. Found in a wide range of still or slow-flowing water bodies, this common duckweed can also grow on mud or damp rocks.
Where it grows
Distribution is in temperate areas in Europe, including Britain, to the Himalayas, Africa, South America, and North America. This duckweed is one of Britain's most common small water plants, which forms familiar green mats covering stagnant water bodies. Widespread throughout Great Britain, but is absent from much of Scotland and Shetland. In Ireland, it is found mainly in the north and east. Elsewhere, the species has a very wide global distribution, absent only from polar areas and the tropics.
Text excerpted from the Wikipedia article Lemna gibba 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.