Cow's horn

Cow's horn Care

Euphorbia grandicornis

What is the plant

Euphorbia grandicornis is a great looking upright multistemmed succulent shrub with strong spines resembling the shape of cows’ horns. It has great angular and zig-zag shaped stems making in a good ornamental choice.

Euphorbia grandicornis is an upright multistemmed succulent shrub, up to 6.6 feet (2 m) tall and about the same in width. The stem is up to 4 inches (10 cm) in diameter, 3 or 4 winged, irregular, constricted in broad, twisted, with triangular segments about 6 inches (15 cm) long. Leaves are tiny, scale-like between the spines. The spines are grey or brownish, joined, forming a horny continuous ridge, up to 3 inches (7.5 cm) long. The flowers are brilliant yellow, growing just above the spines. Euphorbias are very easy to care for.

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Lighting

Full Sun

Hardiness zone

min 9b

Difficulty

Easy

How to Care for the Plant

Water
Unlike most succulents, Euphorbia does not handle long periods of drought well. It may need weekly watering during the summer. Water whenever the soil is dry several inches below the surface. Water deeply, but don’t let them sit in wet soil, which can cause root rot.
Fertilizer
If the soil is poor or the plant is grown in a container, feed with a half-strength fertilizer monthly.
Sunlight
The plant prefers full sun but it can tolerate moderate shade.

Disease diagnosis

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Soil
These plants need a well-draining soil or potting mix. They are not particular about soil pH, but they cannot tolerant wet soil.
Temperature
Outside, this plant can be grown in the areas with the lowest winter temperature of 30°F (−1.1°C) to 50°F (+10°C). Inside, average room temperatures from 65°F/18.3°C to 75°F/23.8°C.
Container
This plant can be grown in containers. Choose a pot with enough drainage holes.