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Azolla pinnata
Also called Ferny Azolla, Mosquito Fern, Water Velvet, Green Azolla, Feathered Mosquito Fern
Azolla pinnata is a small floating aquatic fern from the Salviniaceae family that grows on still or slow water surfaces. It spreads very fast, so keep it in a contained pond or tub where its growth can be controlled.
Azolla pinnata is a species of fern known by several common names, including mosquitofern, feathered mosquitofern and water velvet. It is native to much of Africa, Asia (Brunei Darussalam, China, India, Japan, Korea, and the Philippines) and parts of Australia. It is an aquatic plant, it is found floating upon the surface of the water. It grows in quiet and slow-moving water bodies because swift currents and waves break up the plant. At maximum growth rate, it can double its biomass in 1.9 days, with most strains attaining such growth within a week under optimal conditions.
A. pinnata is a small fern with a triangular stem measuring up to 2.5 centimeters in length that floats on the water. The stem bears many rounded or angular overlapping leaves each 1 or 2 millimeters long. They are green, blue-green, or dark red in color and coated in tiny hairs, giving them a velvety appearance.
Carolina mosquitofern · Pacific mosquitofern · Mexican mosquitofern · Azolla nilotica · Azolla primaeva · Mosquitofern
Text excerpted from the Wikipedia article Azolla pinnata 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.
