Hornwort (Ceratophyllum demersum)

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About This Product

Ceratophyllum demersum is one of the most popular aquarium plants in the trade. Hornwort, or Coontail as it is more commonly referred to, is able to tolerate a wide range of aquatic conditions, which is the reason for its popularity. Ceratophyllum demersum is also very common in the water garden industry, where it is used as an oxygenating plant for small water features and ponds. Hornwort is fine with just being floated in a body of open water and can be broken into pieces to establish new plants. Ceratophyllum demersum is native to the United states and makes an excellent habitat for fish to lay eggs on or hide in.

  • Common Name: Hornwort, Coontail
  • Family Name: Ceratophyllaceae
  • Native To: North America
  • Lighting: Medium-High
  • pH: 6-9
  • Growth Demands: Easy
  • Growth Form: Stem
  • Growth Rate: Fast
  • True Aquatic: Yes
  • Placement In Tank: Mid-Background
  • Available As: Bunch

Customer Reviews

  • 5
    Plants received

    Posted by Tammy Rowe on May 3rd 2018

    Very satisfied!!!! Wonerful plants and excellant packing & delivery was very prompt. Will definately order again in the future!! Great customer service!!!

  • 1
    hairy algae

    Posted by Yulia tkachuk on Apr 29th 2016

    I was disappointed. My plant was shipped to me with hairy algae. It probably contaminated other plants in a bag and I have to bleach all of them, which will kill delicate plants. Will not use this site again. Not worth it

  • 5
    Huge amount!!!

    Posted by Paul Sucietto on Feb 27th 2014

    Such a generous bunch, can't wait to have little baby guppies in the tendrils, floating at the moment.

  • 5
    Very nice and comes with snails

    Posted by on Jan 14th 2010

    Its is very nice and pretty ,but the best is it sometimes has baby snails and they're perfect fore me snail tank

  • 3
    fast growers

    Posted by Unknown on Jun 15th 2009

    I am a beginner to plants and I got a few of these the other week. I really like them because they grow like weeds and I didn't kill them. I'm a little upset because I found two baby snails last night in my tank. besides the snails I'm very happy with all of my plant purchases. They all are very beautiful.

  • 3
    Good and Bad

    Posted by Bradley Chymist on Aug 22nd 2007

    This plant can be great or terrible. I sometimes swear you could grow it in the dark it is that undemanding. However when given just a little bit of light it tends to get tall and stringy looking. Make sure you keep a healthy supply of plant weights handy as well if you want it planted in the substrate since this plant does not put down roots. If you have high light this is not the plant for you, look into a Cabomba species.

  • 4
    Good plant

    Posted by Marc on Jul 16th 2007

    Nice background plant. Grow fast and doesn't need lots of light. It's a tall plant if you don't trim it.

  • 4

    Posted by tabathaᅠ on Dec 31st 1969

    this plant is not as simple as it is pictured it is a large bunch of bifurcating branches it is a busy bush:however