 FNZAS Plant Search
Azolla filiculoides | 
 | Azolla filiculoides var rubra- Common name:
- Origin: New Zealand and Australia
- Temperature: 10 - 22 °C
- pH range: 7.0
- Light: Medium
- Status: Allowed
- Notes: A native free-floating perennial fern that forms a conspicuous red surface on fertile still water. Common in ponds lakes and quiet streams. Has long un-branched roots. The aquatic fern Azolla is the only fern that can fix nitrogen. It does so by virtue of a symbiotic association with a cyanobacterium (Anabaena azollae). Other species, such as A caroliniata are found worldwide are sometimes used as a valuable source of nitrogen for agriculture.
- Propagation: Vegetatively. Small branches break off the parent colony & float away. Can spread quickly in ideal conditions.
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