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Hornwort

Also known as

Rigid hornwort, Coontail and Coon's tail

Taxonomy

Scientific name

Ceratophyllum demersum

Genus

Ceratophyllum

Family

Ceratophyllaceae

Order

Ceratophyllales

How to care for Hornwort

💦 Water

How often to water your Hornwort

Hornwort needs 0.5 cups of water every 9 when it doesn’t get direct sunlight and is potted in a 5" pot.

Use our water calculator to personalize watering recommendations to your environment or download Greg for more advanced recommendations for all of your plants.

Water 0.5 cups every
9

Does your plant get direct sunlight?

No Yes

Select the pot size

☀️ Light

Finding light for Hornwort in your home

Hornwort may have difficulty thriving, and will drop leaves 🍃, without ample sunlight.

Place it less than 3 feet from a south-facing window to maximize the potential for growth.

Select your region to see how the current weather in your area affects the placement of Hornwort in your home 🏡.

🪴 Nutrients

How to fertilize Hornwort

Nutrient, fertilizer, and repotting needs for Hornwort: repot after 2X growth

Most potting soils come with ample nutrients which plants use to produce new growth.

By the time your plant has depleted the nutrients in its soil it’s likely grown enough to need a larger pot anyway.

To replenish this plant's nutrients, repot your Hornwort after it doubles in size or once a year—whichever comes first.

💡 FAQs

💦 Water Needs

Hornwort prefers for the soil to dry out between waterings and should be watered regularly. Use our water calculator to personalize watering recommendations to your environment or download Greg for more advanced recommendations for all of your plants.

Hornwort Water Frequency →

Hornwort Root Rot →

☀️ Sunlight Needs

Hornwort may have difficulty thriving and will drop leaves 🍃 without ample sunlight. Place it less than 3 feet from a window to maximize the potential for growth. Select your region to see how the current weather in your area affects the placement in your home 🏡.

Hornwort Light Requirements →

Hornwort Direct Sunlight Needs & Tolerance →

🐶 🐈 👶 Toxicity

Hornwort is not known to cause harm to humans or pets. Regardless, if you, a family member, a cat, or dog has ingested any plant material, please consult a doctor or a veterinarian.

⬆️ ⬇️ Growth Pattern

Hornwort grows vertically and new growth will emerge from the top of the plant.

Hornwort Lifecycle →

Hornwort Size Guide →

How and When to Prune Hornwort →

🌦️ Growing Outdoors

USDA Hardiness Zone
Hornwort can be grown outdoors in USDA Hardiness Zones 3a-11b. Find your local hardiness zone here.

Hornwort Temperature Tolerance →

Hornwort Hardiness Zones →

Is Hornwort a Weed? →

🍂 Yellow Leaves

Yellow leaves aren’t always a reason to panic, and can be a normal part of a plant’s life cycle. Unless brand new leaves are turning yellow or all the leaves change color at once, it’s likely just your plant shedding old leaves.

Overwatering and root rot are the most likely cause of problems in Hornwort, since they are sensitive to wet soil. The leaves may also appear to be curling or drooping. Less often, yellow leaves are caused by underwatering, nutrient deficiencies, or pests.

Replace soggy soil with fresh, dry soil and download Greg to make sure your plant never gets overwatered again!

🧐 Troubleshooting

When troubleshooting a sad-looking houseplant, start by checking for signs of distress in its leaves, such as yellowing, browning, or drooping, which can indicate overwatering or nutrient deficiencies.

Inspect the soil moisture; too dry or too wet soil can cause problems.

Ensure the plant is getting the right amount of light, as too much or too little can stress it.

Finally, consider environmental factors like temperature and humidity, and adjust care routines accordingly to revive your plant.