Azolla caroliniana is a small floating fern housing blue-green algae in its leaves. This algae is capable of absorbing nitrogen from the air, which can then be used by the plant. Water resistant. A. caroliniana now occurs all over the tropics, where it has become a menace because it covers lakes and deprives the original aquatic plants of light. Used as nitrogen fertiliser in rice paddies, and some varieties used as animal feed. Several related varieties on the market, with similar appearance. A decorative plant for open aquariums.

Part of the world .. America
Temperature .. 5-26ºC
pH tolerance .. 5.5-8pH

• Hardness tolerance .. soft-hard
• Easiness .. difficult
• Height .. 1- cm . Width .. 1-+ cm . Light .. medium - very high
• Please see note regarding small order charge.
• For deliveries outside the UK telephone +44 116 267 7091 . In order for us to obtain plants fresh from the nursery please allow up to 14 days delivery
• key .. about tropical aquarium plants
• planting an aquarium .. achieving a sense of balance
• rock and lava plants .. plants that grow naturally on stones and tree roots
• algae in aquariums .. containing algae in aquariums in aquariums
• aquarium gallery .. a selection of aquarium planting schemes