Azolla

caroliniana

Azolla caroliniana from North America is a small (1-2 cm tall), floating fern housing blue-green algae in its leaves. These algae are capable of absorbing nitrogen from the air, which can then be used by the plant. Azolla caroliniana is used as nitrogen fertiliser in rice paddies, and as animal feed. There are several related varieties on the market, with similar appearance. A decorative plant for open aquariums. 

 

Plant info
Origin:   
North America
Type:   
Floating plants
Growth:   
medium
Height:   
1 cm - 2 cm
Width:   
5 cm - 10 cm
Light demands:   
0.25 Watt per liter
CO2 demands:   
3-5 mg per liter
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Plant Care
Azolla caroliniana (013)