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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 (136)

  • 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!!

  • 5
    Great packaging

    Posted by Nicholas Nguyen on 28 Sep 2022

    Arrived healthy and growing rapidly. Some snails appeared after a few weeks but isn't a big deal for me

  • 5

    Posted by Tricia on 30 Aug 2022

    First time purchase from this website and these were better than other sites or my local pet store. Many had beautiful large cone groupings, gorgeous plants!

  • 4

    Posted by todd stickler on 29 Aug 2022

    very nice healthy plants

  • 5
    Healthy plant

    Posted by Rita R. on 24 Aug 2022

    This is my first time I used Modern Aquarium company to buy plants and I feel very satisfied with my experience. The website was user friendly and was very easy to navigate. The plants arrived on time and all of them looked healthy. I will be back for more plants.

  • 5

    Posted by Loki on 3 Aug 2022

    My favorite plant ever! Arrived in perfect health and clean and bushy.

  • 5
    As Expected

    Posted by Anissa on 20 Jul 2022

    It came quickly and was healthy. My turtle already ate a chunk.