AZOLLA (Azolla caroliniana)(Mosquito Fern) 4oz Portion
(3 reviews)
0.25 LBS
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Common Name: Azolla

Family Name: Azollaceae

Native To: Cosmopolitan

Lighting: Medium


Growth Demands: Easy

Growth Form: Fern-like

Growth Rate: Fast

True Aquatic: Yes

Placement in Tank: Surface

Available As: Portion


Green, mossy, fern-like, floating carpet. Rampant grower. Azolla caroliniana, also known as mosquito fern, is a floating, aquatic fern native to the eastern and southern United States. In its natural habitat, A. caroliniana can be found covering the surfaces of ponds, lakes and swamps. Due to its fast growing tendencies, Azolla caroliniana is infrequently used for aquariums. It can be obtained from most of the major aquatic nurseries, nonetheless.

Azolla caroliniana is a very undemanding plant for the home aquarium, requiring only moderate lighting to thrive. It is also very hardy in nature as the spores of the plant can easily survive cold weather and freezing temperatures. An interesting note is its symbiotic relationship with Anabaena, which are found in small cavities at the base of each leaf. Anabaena is a blue-green algae able to obtain nitrogen from the air and fix it in a way that makes it available for use by its host, A. caroliniana. For this reason, this small floating plant is often grown in rice fields and used as an agricultural fertilizer due to its high nitrogen content.

Pruning and propagation of A. caroliniana is very simple. To prune, simply scoop up all the undesired plants and discard in a safe manner (due to A. caroliniana's invasive tendencies, it should not be allowed to enter local waterways). Propagation is effortless --simply allow this fern to spread along the water's surface.

Depending on light conditions, this plant may be either red or a strong red. Both are beautiful and make wonderful additions to open top aquariums, bowls, and water gardens. They are great, attractive nutrient absorbers and the roots make excellent and attractive cover for fry.

Identifier Exists:


  • 4
    Most of it died but still alive

    Posted by Josh on Mar 20th 2021

    not as easy as I thought, I really wanted to make this one work, it came to me well packed lush and green but I think something may be wrong with my water parameters here so most of it turned white and melted away but it is still here in small amounts and trying to get established so we will see

  • 5

    Posted by Jaye on Jun 12th 2020

    Fast shipping. A fresh plant now floating happily in my pond.

  • 5

    Posted by Amber on May 15th 2020

    Great product, arrived fresh and healthy is growing quickly and beautifully.