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Hornwort (Ceratophyllum Demersum)

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Hornwort (Ceratophyllum Demersum)

Hornwort, also known as Ceratophyllum Demersum, is found worldwide. It is a well-known plant in the hobby. It grows long stems with needle-like and stiff leaves or, in common parlance, the "horns" from where it takes its common name. Hornwort can be used as a floating plant or as an upright stem plant. It does not have roots but when planted, Hornwort produces rhizomes that allow it to attach to the gravel. This plant is a fast grower and many hobbyists use it in fry tanks to provide hiding places for young fish. Because of its fast growth, Hornwort is great for planted aquariums as it will quickly absorb extra nutrients from the water column, preventing algal blooms.

Hornwort can flower and produce seeds. However, the flowers and seeds are small and hardly noticeable. The best and easiest way to propagate hornwort is to snip the stems apart. The separated pieces will just continue growing, creating new plants.    

Caring For Hornwort

Under good conditions, this plant will grow robustly and have light to deep green coloration. It is an easy plant to care for and grow. It does not require any special care or strong lighting but, if provided, the plant will grow fast.

  • Minimum Lighting Required: Moderate
  • Temperature Range: 59-83°F
  • Tank Placement: Floating or Background

The hornwort for sale in our store is one of the easiest plants to start with. Quite literally, you can just put it into your tank, and you are done! The plant should adjust to the new environment very quickly and start growing rapidly.

Plants at Modern Aquarium

When you choose to shop our collection of live aquarium plants and botanicals, every image you see on our site is a true representation of the plant grown in our nurseries and of the highest quality we can provide. Our plants are sourced from the best Florida nurseries and we always have a large selection of plants available for quick shipping to you. Get free shipping when you spend $79.99 on live aquarium plants today. And do not forget to complete your aquarium’s aquascape with our driftwood, aquascaping rocks, botanicals, and live aquarium fish.


Reviews (142)

  • 5
    Good quality and quantity
    Posted by Trevor Samaroo on 11 Jun 2023

    Ordered two bunches and both came in excellent quality. Also the quantity received per bunch was a lot. Have them in my aquarium about 1 week now and they both seem to be surviving. Not much growth , as yet, but they are healthy.

  • 5
    Nice plant.
    Posted by Christopher Murphy on 13 Dec 2022

    Thank You!

  • 5
    Excellent plant!
    Posted by Mark on 11 Dec 2022

    Really nice plant, looks great in my aquarium.

  • 5
    Love this plant!!
    Posted by Brooke on 10 Dec 2022

    With this being the first time I purchased this plant for my aquarium, I absolutely love them. They have grown SO much! I definitely will be ordering again! And they were so fast getting here.

  • 5
    Awesome live plants
    Posted by Donna Piunt on 26 Nov 2022

    I couldn’t find healthy types of plants I wanted for my aquarium which lead to Modern Aquarium site. I chose them because of all the positive reviews. I am so pleased with my Hornwort live plant it was so incredibly healthy and full when I received it within the week I ordered it. It looks amazing in my aquarium and tetras love to hide under it because I am floating it. Thank you Modern Aquarium for your wonderful plants!

  • 5
    Posted by Marcey Holtzendorf on 25 Nov 2022

    Plants were beautiful, packaged nicely

  • 5
    Posted by Paul on 23 Nov 2022


  • 5
    Came in great!
    Posted by Jaimie Kennedy on 15 Nov 2022

    Seems to still be doing good too !

  • 5
    Posted by Heather on 14 Nov 2022

    The hornwort came very healthy and is quite big. Looks beautiful in the tank and the shrimp love it.

  • 5
    Posted by Kristine Klein on 12 Oct 2022

    Plants came healthy and beautiful.

  • 5
    Dressed the 60 gal aquarium
    Posted by Kenneth J Byra on 10 Oct 2022

    Now all the baby fish have somewhere to hide.

  • 5
    Excellent plant
    Posted by Diedra on 3 Oct 2022

    Excellent plant!!