how to grow crown of thorns
Mon, Jan 10, 2022

How to Grow a Crown of Thorns Plant: A Comprehensive Beginner’s Guide

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crown of thorns plant

The crown of thorns plant, also known as the crown of Christ plant, is a succulent plant in the Euphorbiaceae family. A fairly unpretentious plant and its appearance can please in any setting. Among the people, the Euphorbia milii got its name, possibly because of the abundance of thorns on its branches. We have prepared a detailed crown of thorns care guide for you, but first, let’s find out more about it.

Crown of thorns (Euphorbia milii) is a lovely succulent plant that may bloom virtually all year, even indoors, despite its unappealing name. The fresh stem development is surrounded by thick, vivid green leaves. The real blooms of the crown of thorns are tiny and green and come in a wide variety of colors, such as orange, yellow, red, pink, or white. A Crown of thorns may develop into a thorny shrub, but it’s also a great houseplant for most people. It prefers the same room temperature as humans and can cope with the low humidity levels found in most houses throughout the winter.

Want an interesting fact about the crown of thorns plant? The plant’s name comes from some people’s belief that the crown of thorns worn by Jesus Christ at his crucifixion was formed from this plant’s stalks.

How Big Does the Crown of Thorns Get?

Crown of thorns plant size reaches 5 or 6 feet tall in its native Madagascar; however, in the United States, it normally grows to 3 feet, or 2 feet when cultivated as a houseplant.

Now that we got to know this cute plant better, let’s find out how to care for a crown of thorns.

Crown of Thorns Plant Care

how to grow crown of thorns


The more light exposure, like with most blooming plants, the more flowers you’ll receive. Crown of thorns, on the other hand, will bloom dependably if it receives at least 3-4 hours of strong, direct sunshine every day. If you’re going to put it outside, make sure it gets plenty of suns.


The crown of thorns is a versatile indoor plant. It requires a well-draining potting mix and should not be put in a container that is larger than the root ball by more than an inch or two. If there is too much dirt, it can trap water and eventually damage the roots.


Crown of thorns is a succulent that tolerates drought. How often to water the crown of thorns? Once a week is enough. Make sure the soil surface (approximately 1 inch) is dry before watering. Allowing your plant to lie in water or moist soil for lengthy periods can cause the roots to rot. During the winter, the plant goes semi-dormant, requiring less regular watering and no fertilizer.


Maintaining the right temperature is an essential part of thorough care of your crown of thorns plants indoors. Crown of thorns requires at least half a day in direct sunlight. A pleasant temperature range from 65 to 75 °F is ideal. If you lower the thermostat at night, don’t worry; the crown of thorns can withstand temperatures as low as 50 °F.

Repotting Crown of Thorns

Because most commercial plants are offered with standard blooming soil, which may be harmful to Euphorbia milii, repot as soon as possible after purchase. Repot it in a well-draining substrate with a little amount of composted manure added as a nutrition source.

Only repot once the plant has outgrown its present container. Make sure the new pot is just a tad bigger than the old one. If the pot is too large, the plant will concentrate on root growth rather than blooming.

The crown of thorns looks fantastic in a terracotta pot. However, for the best development, choose a pot that is the right size.

How to Grow Crown of Thorns

crown of christ plant

Propagation by Cuttings

Crown of thorns propagation is simple and has a high success rate. Using stem cuttings, this practice is carried out. Simply snip off a younger branch at the juncture of the trunk and the branch with a sharp, sterilized blade or knife. Some white latex will start flowing from the wounds after the cut. Dip the wounds in warm water to stop the sap from flowing excessively and stop the ‘bleeding.’

To enable your cuttings to dry, place them in a dry area, preferably on a newspaper or a paper towel. It should take two to three days to complete this task.

Fill a tiny container halfway with well-drained potting soil. The cactus commercial mix is ​​an excellent choice. Make it a little bit wet. Cuttings won’t establish roots if the substrate is too dry, and they’ll perish if it’s too damp. Both extremes should be avoided.

Place your cuttings in a wet potting mix in a warm location with plenty of bright, indirect sunshine. For several weeks, don’t water it at all.

Now you just have to wait. The cuttings would begin to establish roots after a few weeks. The plant will be completely established and show indications of growth in approximately a month. You may now begin to water your plant, albeit sparingly.

Seed Propagation

It is better not to use seed from your plants – a high probability of loss of high quality. They grow up in a light, moist soil until they are covered, they are kept undercover, mainly in early spring. The sprouts grow quickly. When the first 2-3 true leaves appear, you can plant the sprouts in separate containers.

The Secret of Lush Bloom

Beginning growers often complain that the plant refuses to bloom. A lack of light and food, or a too-small pot can be the reason. Another possible reason is the intense growth of side cuttings. The plant directs all forces to their positions.

You can stimulate the lush by the action of lower temperatures. The temperature is lowered to a critical mark of 50 °F (not below!) and they put a flower under fluorescent lamps. After two weeks, you can return the plant to a warm place, gradually resume the usual care and wait for it to bloom.

Diseases and Pests

Of the pests, the plant is affected by spider mites, aphids, thrips, and scale insects. With excessive humidity and low temperatures, fungal diseases develop. But if you follow the basic rules of care, then the crown of the thorn plant would not give you much trouble.

So, the plant does not have any special problems in the care or reproduction. The varietal variety of the plant is striking in its beauty. It deserves to take its place in the cactus collection as well as in mixed compositions composed of other succulents.

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