California Gardens - The Year Round Gardening Site

Euphorbia milii - Crown of Thorns

Euphorbia milii will grow to 4-5 feet in full sun near the coast or with some protection for inland gardens The Crown of Thorns is often used as a houseplant where it prefers strong indirect light. Euphorbia milii requires decent drainage. The Crown of Thorns can be induced to bloom by leaving the plant a little dry and then watering it again. Euphorbia milii is often pretty close to free flowering in our gardens. Plants start from cuttings fairly easily. The sap is mildly poisonous and pretty sticky so handling with gloves saves a lot of cleanup. Euphorbia milii plants are Winter hardy with a light frost but will lose all foliage and flowers. I try to only plant them in nearly frost free gardens as it takes awhile for them to recover from frost.

High resolution photos of Euphorbia milii are part of our garden image collection.

Euphorbia milii, Crown of Thorns