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
images of Euphorbia milii
are available.