Cow Horn Cactus

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Ships November 15th - November 22nd.

Select Pot

  • Grower
    Ships in our standard grower pot which includes drainage holes at the bottom.
  • Selva
                                                                                                                                                                    

    8 inches wide. Made with recycled plastic and natural materials. Weather resistant, insulating, frost resistant, chip and crack resistant. Includes plug and saucer.

  • Meseta
                                                                                                                                                                    

    6.5 inches wide. Made with recycled plastic and natural materials. Weather resistant, insulating, frost resistant, chip and crack resistant. Includes plug and saucer.

  • Viento
                                                                                                                                                                    

    12 inches wide. Made with recycled plastic and natural materials. Weather resistant, insulating, frost resistant, chip and crack resistant. Does not include a drainage hole.

  • Nube
                                                                                                                                                                    

    6.5 inches wide. Made with recycled plastic and natural materials. Weather resistant, insulating, frost resistant, chip and crack resistant. Does not include a drainage hole.

This product is not California Certified.

$ 35.00
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3-in-1 Moisture Meter

Take the guesswork out of watering and light. Quickly and easily determine your plants water and light levels, along with pH value.

  • No batteries required
  • Easy to read moisture, light, and pH levels with large dial.
  • Perfect for Indoor or Outdoor Plants.
  • How to Use: Simply insert moisture meter 3-4 inches into the soil, toggle switch to test moisture, light, or pH level you would like to measure.
  • Designed only for testing soil. Please be sure to not touch stone or hard rock soil.
  • ***Please note that pH test value cannot be applied to any other liquid than water.

Natural Root Stimulant

Natural probiotics, organics, and moisture control gel boost root growth. Invigorates existing plants, reduces transplant shock and accelerates establishment of new plants. This all natural product will not burn roots.

When Transplanting: Apply between new soil and plant so stimulant touches root ball.

For Existing Plants: Apply stimulant 2-3 inches below top of soil.

Use the proper amount for each pot size:
6″ Pot: ½ Pack
8-10″ Pot: 1 Pack
12-14″ pot: 2 Packs

Organic Indoor Soil Mix

Watch your indoor plants flourish with PlantVine’s Organic Indoor Soil. This is our best all-purpose mix for the demanding requirements of indoor potted plants. The perfect combination of quality ingredients provides the ideal amount of water retention, drainage and aeration for a wide variety of interior plants. This is an all natural product containing no artificial fertilizers or chemicals. Each bag contains 128 oz of soil.

Repotting:
6” pot into an 8-10” planter: About 1.5 bags
8-10” pot into a 12-14” planter: About 3 bags

Organic Outdoor Potting Mix

PlantVine’s Organic Outdoor Potting Soil is time-tested and proven to help your outdoor potted plants thrive. This is our best all-purpose mix, and a smart choice for a wide variety of outdoor plants, flowers and vegetables. The all natural ingredients are specially blended to provide excellent long term drainage, high air porosity and good water holding capability. This mix contains no artificial fertilizers or chemicals. Each bag contains 128 oz of soil.

Repotting:
6” pot into an 8-10” planter: About 1.5 bags
8-10” pot into a 12-14” planter: About 3 bags

Soluble Fertilizer

Great for indoor and outdoor potted plants, this fertilizer quickly dissolves in water, making fertilizing as quick and simple as possible. Just mix 1 teaspoon (scoop included) with 1 gallon of water, and water as normal. Makes 48 gallons.

Shop with Confidence
Our plants are covered by our 45 day guarantee.
We even send you a picture of your plants before they ship.

Scientific Name: Euphorbia grandicornis

Common Names: Cow Horn Cactus, Cow’s Horn, Rhino Thorn Bush

Overview: Euphorbia grandicornis, commonly known as the Cow’s Horn or Rhino Horn Euphorbia, is a striking succulent native to South Africa and Mozambique. This eye-catching plant is recognized for its triangular, segmented green stems with sharp, horn-like ridges along the edges. Its unique, architectural appearance makes it a standout addition to any succulent collection.

The Euphorbia grandicornis can grow up to 6 feet tall in ideal conditions, producing small, inconspicuous yellow flowers during the growing season. Though drought-tolerant, it thrives best in bright, indirect sunlight and well-draining soil.

Description

Caring for your Euphorbia

Euphorbia is a genus of succulent plants, often mistaken for cacti, due to their similar appearance. However, Euphorbias are distinct, belonging to the spurge family (Euphorbiaceae). Euphorbia species vary widely, with some resembling classic cacti, but all produce a toxic, milky sap.

Light

Euphorbia cacti thrive in bright, indirect light. While they can tolerate periods of direct sunlight, prolonged exposure to intense midday sun may cause sunburn, especially if they have not been gradually acclimated. These plants do well in areas with abundant natural light, such as sunny windowsills or bright patios.

Place your Euphorbia near a south or west-facing window where it will receive plenty of light. However, ensure it’s filtered or indirect light for extended periods. If your plant starts to stretch out or become leggy, it’s a sign it’s not getting enough light. Consider using grow lights during winter or in low-light environments.

Water

The most crucial aspect of Euphorbia care is getting the watering schedule right. Like other succulents, Euphorbia plants are drought-tolerant and store water in their stems. Overwatering can lead to root rot and fungal infections, so it’s important to allow the soil to dry between waterings. Let the water soak through the soil and drain out the bottom. Make sure the pot has drainage holes to prevent water from pooling at the bottom.

In spring and summer, water once every 2-3 weeks, depending on how fast the soil dries out. Always test the soil’s moisture level by inserting your finger about 2 inches into the soil. If it feels dry, it’s time to water. In fall and winter, reduce watering to once a month or less, as the plant enters a dormant phase and uses less water. Avoid letting water sit on the plant’s stem, as prolonged moisture can lead to fungal infections.

Soil

Euphorbia cacti need well-draining soil to mimic their native arid environments. A regular succulent or cactus potting mix will work well for your plant.

Since Euphorbia plants grow slowly, they don’t require frequent repotting. Choose a pot one size larger than the current pot when repotting, and be cautious when handling the plant to avoid contact with the toxic sap.

 Fertilizing

Euphorbias are not heavy feeders, but they benefit from occasional fertilizing, especially during their growing season in the spring and summer. Use a balanced, water-soluble fertilizer diluted to half-strength once a month during the growing season. A cactus or succulent fertilizer will work well. Avoid fertilizing in the fall and winter when the plant is dormant. Too much fertilizer during this time can lead to weak growth and poor overall health.

Pruning and Maintenance

Euphorbia plants generally maintain their shape with minimal pruning, but occasional trimming may be needed to remove dead or damaged sections. Use a clean, sharp knife or pruning shears, and wear gloves to protect yourself from the sap.

  • Cut at the joints, where the branches naturally separate. The plant will heal and form a callus over the cut.
  • Clean your tools after pruning to avoid spreading diseases.

Important Note: The sap of Euphorbia plants is toxic if ingested and can cause skin irritation. Always wear gloves and eye protection when handling or pruning your plant. Keep Euphorbia out of reach of pets and children to prevent accidental ingestion.

Additional information

Pot Size

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