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Cow's Horn

5.0 out of 5 (1 experiences)

Fast grower

Survivor

About Cow's Horn

Cow's Horn is a super rare houseplant 🌿 that needs very little water to thrive. They do best in long-lasting, direct light ☀️ and should be less than 1 foot from a window.

Plant parents describe this plant as a fast grower and being a survivor with only 8 being grown with Greg around the world. Check out the reviews below for more details!🌟

Cow's Horn likes soil that is extremely well-draining. Your plant shouldn't need added fertilizers if you repot each time it doubles in size.

Taxonomy

Scientific name

Euphorbia grandicornis

Genus

Euphorbia

Family

Euphorbiaceae

Order

Malpighiales

Also known as

Big Horn

How to care for Cow's Horn

💦 Water

How often to water your Cow's Horn

Cow's Horn needs 0.5 cups of water every 12 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
12

Does your plant get direct sunlight?

No Yes

Select the pot size

☀️ Light

Finding light for Cow's Horn in your home

Cow's Horn love being close to bright, sunny windows 😎.

Place it less than 1ft from a south-facing window to maximize the potential for growth.

Cow's Horn does not tolerate low-light 🚫.

Select your region to see how the current weather in your area affects the placement of Cow's Horn in your home 🏡.

🪴 Nutrients

How to fertilize Cow's Horn

Nutrient, fertilizer, and repotting needs for Cow's Horn: 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 Cow's Horn after it doubles in size or once a year—whichever comes first.

Browse #Euphorbia

💡 FAQs

💦 Water Needs

Cow's Horn thrives in dry soil and should be watered sparingly. Use our water calculator to personalize watering recommendations to your environment or download Greg for more advanced recommendations for all of your plants.

☀️ Sunlight Needs

Cow's Horn requires abundant, bright and direct light. Place it less than one foot from a window to ensure it receives enough light to survive 💪. Select your region to see how the current weather in your area affects the placement in your home 🏡.

🐶 🐈 👶 Toxicity

Greg does not have confirmed data on this plant’s toxicity. If you, a family member, or a pet consumes plant material of unknown toxicity, it’s always best to consult a medical professional.

If you or someone else ingested this plant, call Poison Control at US (800) 222-1222. If a pet consumed this plant, contact your veterinarian or the ASPCA at US (888) 426-4435.

💨 Humidity

Cow's Horn enjoys lots of humidity. Provide humidity for your plant by watering regularly and thoroughly, since plants absorb most water through their root system rather than their leaves. They may also benefit from being placed next to a humidifier.

🪴 Soil

Cow's Horn is very sensitive to wet soil, so choose a potting soil that drains very well and doesn’t retain too much moisture. A good soil will have lots of perlite or vermiculite for drainage and some organic matter for nutrition. A few handfuls of perlite added to regular store-bought cactus soil will do the trick!

💩 Fertilizer

Cow's Horn grows very slowly and doesn’t require added fertilizer. Replacing your plant’s potting soil once a year should provide them with more than enough nutrition. Remember, plants get their energy from sunlight, not fertilizer!

❄️ Dormancy

It’s common for Cow's Horn to go dormant in the wintertime and you may notice their growth slow down. Waterings should be spaced out more during this time.

🌎 Native Region

Cow's Horn is native to Worldwide.

🌸 Flowers

Cow's Horn produces flowers in the wild, but does not flower when kept as houseplants.

🧐 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.