Hornwort (Ceratophyllum Demersum) is a perennial aquatic in the Ceratophyllaceae family with easy care difficulty. It requires aquatic watering and full sun or partial shade light in USDA hardiness zones 3-11. This plant is safe for cats and dogs.

Ceratophyllum demersum is a submerged, free-floating, perennial aquatic plant known for its bushy, horn-like whorled leaves and rapid growth in freshwater habitats.

Hornwort

Hornwort

Ceratophyllum Demersum

Ceratophyllum demersum is a submerged, free-floating, perennial aquatic plant known for its bushy, horn-like whorled leaves and rapid growth in freshwater habitats.

Quick Facts

Type
aquatic
Lifecycle
perennial
Care Difficulty
Easy
Water Needs
aquatic
Light
Full Sun, Partial Shade
Hardiness Zones
3-11

Safety

🐕
Pet Safe
👶
Child Safe
Non-Toxic

Growing Conditions

Soil Types:silty, loamy, muddy
Indoor:No
Outdoor:Yes
Garden Use:oxygenator, algae control, habitat

Care Calendar

Monthly care tasks for Hornwort

Jan
Prune
Feb
Fertilize
Mar
Repot
Apr
Water+
May
...
Jun
...
Jul
...
Aug
...
Sep
...
Oct
...
Nov
...
Dec
...

Expert Care Tips

Pro tips from botanists and plant experts

Watering Tip

Check soil moisture by inserting your finger 1 inch deep. Water only when the top layer feels dry to prevent overwatering.

Humidity Trick

Group plants together to create...

Growth Hack

Rotate your plant every...

Photo Gallery10+ photos

Hornwort
Hornwort detail

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Taxonomy

Family:Ceratophyllaceae
Genus:Ceratophyllum