
Crown of Thorns like full sun and can also tolerate partial shade. In USDA planting zones 9 and higher, they can be kept outside year-round. In cooler climates, keep the plant outside during warm and hot months and then bring it inside when it gets cold. A spot on a south-facing window ledge is perfect for cold months.
Can you grow Crown of thorns from seed?
Crown of Thorns can be planted from seed, however, it takes much longer and they are less likely to produce new seed unless they are hand-pollinated with other plants. Plant Crown of Thorns in full sun or partial shade.
Does crown of thorns bloom all year round?
Sited correctly, the plant offers a mass of delicate blossoms all year round. Crown of thorns is great as an outdoor shrub in warm climates, as it is extremely tolerant of high temperatures. It even thrives in temperatures above 90º F. (32 C.).
Is Crown of thorns indestructible?
Crown of Thorns is an easy plant to grow and often called indestructible because it can withstand long periods of dryness. Treated well, these plants can live for decades and have been known to be passed down in families through the generations. This is the perfect plant for the forgetful or neglectful plant-enthusiast.

How much sun does crown of thorns need?
three to four hoursLight. As with most flowering plants, the better the sun exposure, the more blooms you will get. Euphorbia needs direct sunlight and it will reliably bloom as long as it receives at least three to four hours of bright sunlight per day. Outdoors, try to place it under full sun.
Is crown of thorns a shade plant?
Provide enough sun. Crown of thorns should get full sun for three to four hours every day. Keep your plants in a sunny window where they can receive enough direct sunlight.
Do crown of thorns come back every year?
In the early spring through late summer, a Crown of Thorns plant produces colorful bracts in red, yellow, and pink surrounding tiny flowers. Under the right conditions, a Crown of Thorns plant will bloom all year.
Does crown of thorns spread?
Like many euphorbias, the crown of thorns produces a milk-like sap that can irritate the skin. Mature plants can spread to a width of several feet, depending on pruning.
What is the lowest temperature a crown of thorns can tolerate?
35 degrees F.Basically, crown of thorns is treated like a cactus. Although it may be able to tolerate light frost, extended periods of cold below 35 degrees F. (2 C.) will result in a frost-bitten crown of thorns plant.
Can crown of thorns be planted outside?
Crown of thorns is great as an outdoor shrub in warm climates, as it is extremely tolerant of high temperatures. It even thrives in temperatures above 90º F. (32 C.). You can add this flowering succulent to your garden without worrying much about maintenance.
How long does it take crown of thorns to bloom?
Flowers. Crown of Thorns will flower between late spring to late summer, producing small disk-like flowers across the foliage line. Each inflorescence can last up to two weeks, with the overall flowering process spread across several weeks. To achieve a bloom, you must provide a cool and dry dormancy period.
How fast does a crown of thorns grow?
Crown of Thorns is a slow- growing plant, so cuttings are usually shipped either bare root, or callused. Many firms are ship- ping rooted cuttings with dry roots; this is not usually a problem as new roots form quickly. Rooting takes from 14-21 days; bottom heat is best but not essen- tial during rooting.
How do you make a crown of thorns bushy?
Two or three new branches will emerge at every pruned branch, creating a bushier, fuller plant. As a general rule, it works best to cut the stem at its point of origin to prevent stubby, unsightly branches. Prune a crown of thorns to remove weak, dead, or damaged growth or branches that rub or cross other branches.
Should I cut back my crown of thorns?
Answer. Pruning your mature crown of thorns plant can help to retain a nice shape and fresh leafy growth. Some varieties naturally begin to arch and bend as they grow, and pruning can keep the plant more compact and suitable for the indoors.
How do you get more flowers on the crown of thorns?
5 Secrets to Get a Crown of Thorns to BloomChoose a sunny location for your Crown of Thorns. ... Plant the indoor Crown of Thorns in good potting soil and provide thorough drainage for excessive water.Water Crown of Thorns regularly. ... Fertilize the Crown of Thorns with a full-strength liquid fertilizer when you plant.More items...
How long does a crown of thorns live?
Although the actual life expectancy of crown-of-thorns starfish in the wild is not known, they grow old, reaching the senile phase after 3-4 years. Most specimens that have been studied died between 5 and 7.5 years. In captivity, they can survive for about 8-15 years.
How big do crown of thorns plants get?
In its country of origin (Madagascar) the plant will grow to 5 or 6 feet tall; however, in the United States, it typically grows to 3 feet, or 2 feet when grown as a houseplant. Crown of Thorns grows best in dry to medium moisture, well-drained soils in full sun.
Do crown of thorns losing leaves in winter?
Temperature Requirements Crown of Thorns prefer normal room temperatures. Our comfortable homes are perfect. Houseplants do great outside during the warm season, but they don't like cold weather. They'll start to lose leaves and sulk if the temps go below 60°F (15°C).
Where do you put the crown of thorns plant?
This succulent plant needs lots of sunlight. If you want the crown of thorns as a houseplant, position it in a bright, sunny window on the west or south side of your home. Unlike many houseplants, bright light and likes direct sunlight.
What fertilizer is best for crown of thorns?
This interesting succulent does not grow quickly and does not need a large amount of fertilizer. In the landscape, you should use a diluted solution of a balanced fertilizer (10-10-10) once a month in the springtime and throughout the summer.
Why are the leaves on my crown of thorns turning yellow?
Crown of Thorns leaves turning yellow can be out of many reasons: improper watering, inadequate sunlight and temperature, and lack of nutrients. Euphorbia milii, commonly known with names like Crown of Thorns, Christ Thorn, Christ Plant, etc., produces various colored flowers.
How often should you water a thorn crown?
Crown of Thorns needs 0.8 cups of water every 12 days when it doesn't get direct sunlight and is potted in a 5.0" pot. Use our water calculator to personalize watering recommendations to your environment or download Greg for more advanced recommendations for all of your plants.
Are there different types of crown of thorns?
Varieties: Our Favorites Brush Fire crown of thorns bears rosy-red flowers. This easy-to-grow houseplant features creamy-white flowers. Gabriella is a lovely variety that produces soft, rosy-pink flowers. Pieta crown of thorns offers soft, salmon-pink flowers.
How do you plant a crown of thorns in the ground?
Like many other houseplants, the crown of thorns only needs to be repotted every couple of years or so. While wearing gloves, gently remove the plant from its current pot, loosening the roots if need be. Place it into a planter one or two inches larger in diameter with fresh cactus soil, and give it a good water.
How do you make a crown of thorns bushy?
Two or three new branches will emerge at every pruned branch, creating a bushier, fuller plant. As a general rule, it works best to cut the stem at its point of origin to prevent stubby, unsightly branches. Prune a crown of thorns to remove weak, dead, or damaged growth or branches that rub or cross other branches.
Are there different types of crown of thorns?
Varieties: Our Favorites Brush Fire crown of thorns bears rosy-red flowers. This easy-to-grow houseplant features creamy-white flowers. Gabriella is a lovely variety that produces soft, rosy-pink flowers. Pieta crown of thorns offers soft, salmon-pink flowers.
What kind of soil does crown of thorns need?
Crown of thorns needs a potting soil that drains quickly. A mix designed for cacti and succulents is ideal. Use a pot that is large enough to accommodate the roots comfortably. Remove as much of the old potting soil as possible without damaging the roots.
Should I prune crown of thorns?
Answer. Pruning your mature crown of thorns plant can help to retain a nice shape and fresh leafy growth. Some varieties naturally begin to arch and bend as they grow, and pruning can keep the plant more compact and suitable for the indoors.
How tall do crown of thorns grow?
The original varieties grew woody stems up to 3 feet tall. Some newer varieties can grow up to 5-6 feet tall. The stems are 5-6 sided and made to hold small amounts of water. The succulent leaves are oval, smooth-edged, narrow, and grow in a spiral fashion on the stem. Leaves can range from 1 ½” on the original plant up to 6″ on some of the hybrids. The leaves range in color from bright green to a grayish green. As the stem matures, the leaves drop off naturally.
What color are crown of thorns?
Under ideal conditions, the Crown of Thorns will bloom year-round. The tiny cup-shaped flowers are generally formed in clusters of two to eight at the tips of the stems. The flowers are enclosed by red bracts which are modified leaves that look like large flower petals. It is the bracts that give this plant its showy appeal. The original plants almost always had red or yellow bracts. Recent hybrids offer bract colors in yellow, red, shades of red, shades of pink, yellow, white, orange, blue, cream, and bi-color variations. When people refer to the color of their Crown of Thorns, they are usually talking about the color of the bracts, not the actual flowers. The flowers are minuscule compared to the bracts surrounding them.
What do the blooms on the Crown of Thorns look like?
The blooms on the Crown of Thorns look like butterflies that have adorned the thorny plant with their graceful beauty, which is especially stunning in winter when not much else is blooming.
Where did the crown of thorns come from?
Crown of Thorns ( Euphorbia milii) originally came from Madagascar and there is speculation that this is the plant used to create Christ’s crown of thorns, hence its name. It may have been growing in the Middle East at the time of Christ, yet it is unlikely this is the one that was used for his crown.
Is Euphorbia Milii cold tolerant?
It is not cold-tolerant at all and in cool climates, it should be kept as a potted plant and moved indoors and outdoors with the weather.
Can Crown of Thorns be killed?
Treated well, these plants can live for decades and have been known to be passed down in families through the generations. This is the perfect plant for the forgetful or neglectful plant-enthusiast. The Crown of Thorns is extremely forgiving and its care is simple. It is quite difficult to kill this plant.
Is Crown of Thorns drought tolerant?
It doesn’t use a lot of resources and allows you to grow a beautiful plant while also conserving water. Desert landscapes and natural garden designs using drought-tolerant plants benefit from including Crown of Thorns.
Written by Cactusway Team
The plant will be burned by direct sunlight but it can survive in a partial shade. Thus, if you want to grow the plant out in your garden, it is important to make sure that the area you will be planting this in does not have a strong sunlight. Otherwise, without proper sun protection for the plant, it will burn.
Crown of Thorns General Light Requirements
Generally, a crown of thorns plant requires as much bright, indirect sunlight as you can provide. The better the light exposure, the more flowers you will get during the flowering season.
Crown of Thorns General Temperature Requirements
The ideal temperature range for a crown of thorns plant is between 60°F and 90°F (15°C – 32°C). The plant can tolerate higher temperatures as long as there is enough moisture in the air. However, prolonged exposure to temperatures above 100°F (38°C) can damage your plant’s leaves.
Can Crown of Thorns Receive Too Much Sunlight?
While this succulent is sun-loving and can easily soak up intense amounts of sunlight, there are times when the intensity is too much for them. If your crown of thorns is constantly exposed to scorching, direct sunlight, you could end up with a sunburned plant.
How Can You Prevent Sunburn?
If your crown of thorns is already displaying signs of sunburn, you need to respond promptly to prevent further damage.
Can a Sunburned Crown of Thorns Be Saved?
A sunburned crown of thorns can be saved, but it will take time for the plant to heal and recover.
How Can I Protect My Crown of Thorns from Full Summer Sun?
One of the easiest methods you can use to protect your crown of thorns from damage caused by extreme summer sun is shade cloth.
What zone is Crown of Thorns?
Plant crown of thorns in the garden in U.S. Department of Agriculture plant hardiness zone 10 and above. Sited correctly, the plant offers a mass of delicate blossoms all year round. Crown of thorns is great as an outdoor shrub in warm climates, as it is extremely tolerant of high temperatures. It even thrives in temperatures above 90º F. (32 C.).
Where does the crown of thorns come from?
The crown of thorns euphorbia species hails from Madagascar. The plants first came to this country as novelties. More recently, growers have developed new cultivars and species that make growing crown of thorns outdoors more attractive. If you are lucky enough to live in one of the warmer areas of the country, you’ll enjoy growing crown ...
What is the name of the plant that Jesus wore at his crucifixion?
Lots of people grow a crown of thorns plant ( Euphorbia milii) as a unique houseplant, and unique it is. Also called crown of thorns euphorbia, it’s one of the few succulents with real leaves – thick, fleshy, and tear-shaped. The leaves appear on stems that are armed with sharp, inch-long (2.5 cm.) spines. The plant gets its common name from the legend that the thorny crown worn by Jesus at his crucifixion was made from sections of this plant.
Can you plant crown of thorns in the garden?
Printer Friendly Version. Image by pookistock. With a common name like “crown of thorns,” this succulent needs some good publicity. You don’t have to look very far to find great attributes. Heat tolerant and drought resistant, the crown of thorns plant is a real gem. You can plant crown of thorns in the gardens of warm climates.
Can you water crown of thorns?
Plant crown of thorns euphorbia shrubs in full sun for best blossoms. The plants also tolerate salt spray. As with any shrub, a crown of thorns plant needs irrigation after transplant until its root system gets established. After that, you can cut back on water thanks to its great drought tolerance.
Can you propagate crown of thorns from cuttings?
If you love the crown of thorns in the garden and want more, it’s easy to propagate from tip cuttings. Just be sure to protect it from frost and freeze. You can propagate crown of thorns from tip cuttings. You’ll want to wear thick gloves before you try this, though. Your skin can get irritated from both the spines and the milky sap.
How to use a crown of thorns plant in garden
Crown of thorns plants are not often grown outdoors in the United States because they will only survive in USDA hardiness zones 9 to 11, as per The Spruce. So unless you live in warmer areas such as Florida, California, Arizona, Texas, or Hawaii, you'll need to keep your Christ plant indoors.
How to grow a crown of thorns plant
The most common way to grow crown of thorns plants is through propagation or buying a small plant from a local nursery. To thrive, it needs well-draining soil and compost for enrichment and coarse sand for additional draining. This plant's pot should not be much larger than its root ball.
How to care for a crown of thorns plant
Taking care of a crown of thorns plant is easy enough, especially when growing it indoors. The most important thing to give them is sunlight. The more sunlight they get each day, the more blooms they will have. Even three or four hours of sunlight per day can help them reliably flower, as per The Spruce.
Crown of thorns plant varieties
If you've wanted to get your hands on a crown of thorns plant, there are plenty of varieties to choose from. Explained by Plant Index, hybridizers have managed to cultivate many versions of this plant, some smaller, brighter, and with larger flowers. Likely, your local nursery will carry a few variations of the Christ plant.
Is the crown of thorns plant toxic?
The crown of thorns plant is, unfortunately, toxic. Euphorbia milii is harmful to humans and pets, causing diarrhea, vomiting, and skin irritations.
How to repot a crown of thorns plant
You should repot your Christ thorn about every two years, says Gardening Know How, and plan to do so in the early spring or late winter. As the soil in the original container ages, it loses the ability to drain properly, leading to root rot.
How tall does Crown of Thorns grow?from thespruce.com
This slow-growing plant will grow into a shrub reaching 3-6 feet tall outdoors.
How much sunlight does a crown of thorns need?from thespruce.com
At least half a day of sunlight is a major requirement for crown of thorns. Temperature-wise, a comfortable 65 to 75 degrees Fahrenheit is good. Don’t worry if you lower the thermostat at night; crown of thorns can handle temperatures down to 50 degrees Fahrenheit.
Why are the Leaves of Crown of Thorns Turning Yellow?from plantindex.com
The main reason why this happens is overwatering . Stop watering and water only when 50% of the soil is dried out. Make sure your plant is in a warm location with plenty of light and good air circulation.
Why is the Crown of Thorns Not Blooming?from plantindex.com
Crown of thorns plants need 3-4 hours of direct sun and plenty of indirect sun to bloom. If you want to encourage blooming, simply use a low nitrogen, high phosphorus plant food.
How often should I repot Crown of Thorns?from gardeningknowhow.com
Repot the plant every two years in late winter or early spring. Crown of thorns needs a potting soil that drains quickly. A mix designed for cacti and succulents is ideal. Use a pot that is large enough to accommodate the roots comfortably. Remove as much of the old potting soil as possible without damaging the roots.
What kind of soil should I use for crown of thorns?from plantindex.com
My crown of thorns plant tends to favor a potting mix of 1 part regular potting soil and 2 parts coarse sand. To this I add a little compost to enrich it. You can also get ready-made potting mixes like those designed for succulents and cacti. This will also work great for the crown of thorns.
What is the crown of thorns?from plantindex.com
The Crown of Thorns plant, Euphorbia milii, is a blooming succulent that grows into a woody shrub that features sharp thorns on its stems. The plant’s name has biblical connotations — it’s believed that the crown of thorns worn by Jesus Christ as his crucifixion was made with the stems of this plant. Because of this, the plant is also known as ...
Will crown of thorns grow in shade?
Plant in full light and well-draining soil if growing outdoors. The plants will love some mid-day shade in arid conditions. 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.
How often should you water crown of thorns?
Euphorbia Milii (Watering Crown of Thorns) When it comes to water, the crown of thorns plant is cautious and less demanding. Its thick, prickly stems store water, allowing it to stay hydrated for days at a time. Once a week, give it a good soaking and allow the surface soil (approximately one inch deep) dry up before watering again.
How do you get more flowers on the crown of thorns?
Plant the indoor crown-of-thorns in excellent potting soil with enough of drainage to prevent overwatering.
What causes yellow leaves on crown of thorns?
A crown of thorns plant with proper care has emerald green foliage with white, pink, red, and sometimes yellow blooms. A healthy crown of thorns can grow up to three feet tall, despite being considered a little succulent.
How tall does crown of thorns get?
Crown of Thorns is a perennial shrub with brilliant green leaves and greenish blooms that is deciduous and herbaceous. The flowers are encased in red or yellow bracts that remain for a long time.
Can you root a crown of thorns?
Crown-of-thorns cuttings demand warm temperatures and bright light to root, thus the optimum time to take root cuttings is in the spring or summer. Cuttings obtained in the fall or winter will not have enough time to root before the cold weather arrives, resulting in a sickly, short-lived plant.
Can you cut back a crown of thorns plant?
If you need to prune crown of thorns, the good news is that it’s a forgiving plant that may be pruned in any way you want to get the ideal size and shape. Every clipped branch will sprout two or three new branches, resulting in a bushier, fuller plant.
