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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 (147)

  • 3
    A little brown
    Posted by Daniel Best on 2 Apr 2024

    I didn't realize that these plants would be shipped from Florida. I saw the store was in NY so I thought there would be less time in the shipping box and the plants might show up better looking. Unfortunately I was wrong. Anyway, on to the plants. They came with some brown prices and not matter how much I rinse them in the sink before putting in the tank, they still drop a lot of needles. This is my first time with hornwort, so I'm not sure if that is normal. I tried floating them around but some sank and the ones that did float blocked too much light, so I tied them to some rocks. Still waitkng to see if the brown ones get green on the water.

  • 3
    Hornwort, nice bushy and green but very messy
    Posted by Hailey on 13 Jan 2024

    A lot comes in just one bundle. Not all, but most the hornwort was in good shape. I made the mistake of putting it in without rinsing it first (I wanted to keep the good bacteria on them for my cycle)..particles and little worms or larvae went everywhere in my tank and fogged up my tank pretty good. There are loads of little critters that live in’s not necessarily a bad thing though (free fish food I suppose). They are just a bit unsightly is all. Overall, if you don’t mind little critters in your tank, it’s a good filler plant in your tank. If you don’t want little critters in your tank, definitely skip this plant. I was very pleased with the other plants from this company.

  • 5
    Healthy and lush
    Posted by Malgorzata Pikor on 9 Jan 2024

    The plant came healthy and lush. Make sure to rinse well to remove any loose or dead "needles". I was pleasantly surprised, when placing an order, that the seller included bonus plants! I placed another order as I am very satisfied with the quality and value.

  • 5
    Posted by Jana Stinman on 18 Dec 2023

    Growing like mad even after a week. Beautiful plant. Decided to put them straight into the substrate and they look amazing. Highly recommend.

  • 5
    Great bunch of Hornwart
    Posted by Toshia Morrison on 25 Oct 2023

    Came in a good sized bunch and looks very healthy! Will definitely order again!

  • 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