Crown of thorns plant It is a succulent climbing shrub.: Euphorbia milii

Euphorbia milii
Crown of thorns plant It is a succulent climbing shrub growing to 5 feet tall,
with densely spiny stems. The straight, slender spines, up to 3 cm long, help it scramble over other plants. The leaves are found mainly on new growth, and are ovate, up to 3.5 cm long and 1.5 cm broad. The flowers are small, subtended by a pair of conspicuous petal like bracts, variably red, pink or white, up to 12 mm broad.
The sap is moderately poisonous, and causes irritation on contact with skin or eyes.
Crown of thorns bloom almost year round.
Crown of Thorns plant becomes stressed due to over watering or under watering, humidity or temperature changes, it may quickly drop all of its leaves.
Crown of Thorns plant is a succulent house plant capable of blooming almost year round.
To produce new specimens from your crown of thorns cactus, take cuttings from younger branches in spring or summer. To stop drainage of sap from the cut end, dip each cutting into warm water for a few minutes. Next, dry the cuttings for a few days, allowing a callus to form over the cut end.
Growing the plant is easy because it adapts well to normal room temperatures and in dry indoor environments.
Flowering is continuous throughout the growing season.
Crown of Thorns will tend to develop a long vertical appearance unless you prune it regularly to encourage it to branch out.
If some branches of your plant are rotted or unsightly,
cut them back to where you see clean, healthy growth.