Euphorbia milii, commonly known as Crown of Thorns, is a hardy, flowering succulent shrub that brings bold color and strong character into the landscape. It’s especially valued for its ability to bloom for extended periods while tolerating dry conditions.

The stems are thick, woody, and covered in sharp spines, giving the plant a rugged, sculptural presence. The foliage is small, oval, and medium green, appearing along the stems and providing a light contrast to the structure.

What appears to be flowers are actually colorful bracts, typically in shades of red, pink, or yellow, surrounding small true flowers. These bracts can appear throughout much of the year in warm climates, creating long-lasting color.

It has a somewhat upright, branching habit and can be used as an accent shrub, container plant, or even a low barrier due to its thorny stems.

Euphorbia milii grows best in full sun to partial shade and requires well drained soil. It is highly drought tolerant once established and thrives in warm, dry conditions.

It typically reaches about 2 to 4 feet tall and wide, forming a loose, upright shrub. It is well suited for USDA zones 9 through 11. The foliage is evergreen.

This plant has moderate toxicity, and its milky sap can be irritating to skin and eyes, so care should be taken when handling.

The flowers may attract pollinators such as bees.

It is generally deer resistant.

Euphorbia milii fits especially well into desert, Mediterranean, and container garden designs, where its color and structure can be used to create focal points.

It pairs well with plants like Aloe ‘Blue Elf’ to add seasonal flowering contrast, Senecio cylindricus to introduce cool toned texture, and Portulacaria afra ‘Variegata’ to create a softer, contrasting layer.

Expert Tip:

Place this in full sun to maximize flowering, because strong light encourages more consistent blooms. Be mindful of placement near walkways, as the spines can be sharp and the sap can be irritating.

— Nick from Rooted Theory