Crown of thorn plant

Euphorbia milii (Crown of Thorns)

Euphorbia milii – The Crown of Thorns Plant

With lots of colorful varieties Euphorbia milii commonly called the Crown of Thorns Plant. They are a long flowering plant and easy to grow in a warm climate.

Many hybrids have been produced in Thailand and it is regarded as a ‘Lucky Plant’ by the Chinese. However these colorful plants are actually native to Madagascar.

It must be understood that these are highly hybridized, many without cultivar names, so flowers and form will differ greatly.

These are succulent plants and will grow well indoors, with a long flowering nature they are very popular as a house plant. The ‘Lucky Plant’ idea revolves around the flowers, when the inflorescence includes 8 individual flowers the luck will follow.

Flower colours vary from red through pink and yellow to white, the modern hybrids showing more variety and many with larger flowers than the species.

Euphorbia milii Care

Good filtered light is essential for growing indoors. They will grow well in full sun as well. Euphorbia milii (crown of thorns) do require a free draining potting mix and between watering’s the potting soil needs to be allowed to partially dry out.

Best watered from below as water accumulation on the foliage can cause disease and rot. These are not a plant that thrive in humid climates.

Fertilizer applied in the form of slow release pellets in spring and then regular applications of a liquid seaweed fertilizer will help promote strong growth.

Make sure plants are not subjected to heavy frosts if growing outdoors

Euphorbia milii Propagation

As the milky sap is both poisonous and a skin irritant ( it can cause dermatitis) you should wear gloves when handling these plants.

Simple to propagate from stem cuttings in spring. You will find that the stems when cut exude a sap, this needs to be dried off before planting. Leave to dry for a few days until the cutting callus es over.

Cuttings will strike in a succulent potting mix, roots should form in 1 – 2 months. Plants should be ready to pot in in 3 – 4 months.

Pruning is also easy, best carried out in warm dry weather so that the plant seals over the cut quickly.

You may also be interested in

  • Euphorbia characias ssp. wulfenii
  • Euphorbia x martini ‘Ascot Rainbow’
  • Euphorbia pulcherrima
  • Euphorbia obesa

Euphorbia Crown Of Thorns Growing: Learn About Crown Of Thorns Houseplant Care

In Thailand it is said that the number of flowers on a Euphorbia crown of thorns plant foretells the luck of the plant keeper. Over the past 20 years, hybridizers have improved the plant so that it produces more and larger flowers (and if the saying is true, better luck) than ever before. In the right setting, hybrids of Euphorbia (crown of thorns) bloom almost year round.

How to Grow Crown of Thorns Indoors

If you’re looking for a plant that thrives in the conditions inside most homes, try the crown of thorns plant (Euphorbia milii). Growing the plant is easy because it adapts well to normal room temperatures and in dry indoor environments. It also forgives occasional missed waterings and feedings without complaint.

Crown of thorns houseplant care begins with placing the plant in the best possible location. Place the plant in a very sunny window where it will receive three to four

hours of direct sunlight each day.

Crown of Thorns Growing Care

From spring through late fall, water the crown of thorns plant when the soil is dry at a depth of about an inch, which is about the length of your finger to the first knuckle. Water the plant by flooding the pot with water. After all of the excess water has drained through, empty the saucer under the pot so that the roots aren’t left sitting in water. In winter, allow the soil to dry to a depth of 2 or 3 inches before watering.

Feed the plant with a liquid houseplant fertilizer. Water the plant with the fertilizer every two weeks in spring, summer and fall. In winter, dilute the fertilizer to half strength and use it monthly.

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. As potting soil ages, it loses its ability to manage water effectively, and this can lead to root rot and other problems.

Wear gloves when working with crown of thorns. The plant is poisonous if eaten and the sap causes skin irritations. Crown of thorns is also poisonous to pets and should be kept out of their reach.

The Crown of Thorns plant (Euphorbia Milii) originally grew in Madagascar. This succulent shrub holds multiple stems and dark green leaves.

Thorns cover the branches. However, they feel relatively soft when touched making them not too difficult to work with.

The Crown of Thorns plant started to become popular during the Victorian era. Euphorbia Milii has several common names including:

  • Crown of Thorns
  • Christ plant
  • Christ thorn

A recent great deal of cultivar development and hybridization took great interest on the crown of thorns. It resulted to a tremendous amount of choice in flower color and plant blossom size.

In addition to being an excellent houseplant, you can plant Euphorbia milii outdoors in the warm climates of USDA hardiness zones 9B through 11.

In this article, we will share information on growing crown of thorns. It will also provide tips on propagation and solutions for pests and diseases.

Crown Of Thorns Plant Characteristics

Apart from being an evergreen plant, Euphorbia Milli can also resist drought. It produces woody, succulent stems up to three feet high. The thorns cover the stems randomly and measure up to an inch long.

The bright green leaf bracts grow randomly and slightly sparse. They appear mostly on newer stems and fall away from the older stems. This means you can only find leaves on the youngest and newest portions of the plant.

Blooms appear mostly throughout the spring and late into the summer. However, in ideal conditions, the plant can produce flowers year-round.

To monitor the well-being of your crown of thorns, always check on its leaves. Sporadic shedding from mature stems does not indicate a problem. But if all of the leaves fall off suddenly, it signals stress which poses a threat to your plant.

If a sudden decrease in leaves happens, you must take the necessary steps to determine its cause. More often than not, excessive watering or poor drainage usually result to this. After solving the problem, the leaves may grow healthy again.

Daily Caring For Euphorbia Milii

Although crown of thorns belongs to the species of Euphorbia succulent plants, it can only store a limited amount of water using its stems. The plant also takes in water through the leaves, so misting the plant on a daily basis may help.

In fact, spraying with a weak saline solution works great because this plant does well at the seaside in full sun.

The plant needs minimal nourishment but does respond to slow-release fertilizer, and it does very well in poor but well-drained soil.

However, a special cactus soil mix would be best.

The root ball should not remain moist for an extended period to avoid root rot.

This plant has a high drought tolerance. However, the best way to water succulents like this plant is on a weekly basis and remember to allow the soil to dry completely.

Keep The Atmosphere Sunny And The Soil Light

This succulent plant hungers for sunlight. If you want the crown of thorns as a house plant, 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.

When planting outside, a sunny rock garden makes an excellent setting. If mixed in with cactus and other xeriscape type plants, the crown of thorns looks very attractive.

As with all succulents and cacti, provide the soil with excellent drainage. A soil mixture containing about one-third perlite or pumice makes a good well-drained soil option.

The plant grows well if placed under direct bright light in areas with cooler summers. In the regions governed by scorching, summer weather, set the plant in areas with good afternoon shade to avoid withering.

Do not overdo with the shade as too much of it results in reduced flower production.

In outdoor containers, you may use a prepared cactus soil mix. Give the pot plenty of drainage holes and place it in a place where it can get ample sunlight.

Start your planting process with a layer of gravel on the bottom to ensure excellent drainage.

How To Fertilize Crowns Of Thorns

Although the crown of thorns remains healthy even without fertilizers, an occasional, diluted dose of basic fertilizer helps with bloom production. However, choose a type of fertilizer without boron as the plant reacts sensitively to this micronutrient.

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. If using a granulated fertilizer, give four tablespoons per 10 square feet.

In outdoor containers, use a water-soluble liquid fertilizer (3–1–2 ratio) at a rate of half a teaspoon per gallon of water. Apply this dose every month. The same dosage also serves as an excellent solution for houseplants.

Maintenance And Pruning

Prune lightly (our favorite pruners here) to maintain the size and shape of your plants. Although evergreen, the crown of thorns naturally grows more vigorously throughout the spring and summer.

In the autumn, remove old branches with most of its leaves withered. This will stimulate more new growth when springtime arrives.

Remove dead, fallen leaves, and flowers from the surface of the soil. This will help with soil aeration and prevents fungal disease. Moreover, cut background leaves, stems, and other unattractive growth.

Avoid contact with the milky sap of the plant when you trim. This toxic, milky, white sap causes skin irritation and eye problems.

In fact, getting the fluid in your eyes can result in temporary blindness. For this reason, always wear gloves, goggles, and other protective clothing when pruning the plant.

Clean your pruners thoroughly after each use. Wash the tool with water and wipe it clean using a cloth disinfected with rubbing alcohol.

Crown of thorns is one of the many good indoor plant types for greening your home. Floor plants, desktop plants, flowering plants and more.

Learn more – Is the Crown of Thorns Plant Poisonous?

What To Do With Crown Of Thorns During Winter Month

Letting houseplants stay outside in the summertime seems like a good idea. On the other hand, it takes little cold and damp to kill a crown of thorns or to get root rot started.

For this reason, move both container plants and potted plants indoors before the onset of rain or the winter season.

Transition the crown of thorns gradually when you move them back outdoors in the springtime.

Acclimate your plants by placing them outdoors in partial shade for one or two weeks before moving them into bright sunlight.

Check for all danger of frost and make sure those already melted before acclimation.

Diseases And Pests

Generally speaking, infestations and diseases plague crown of thorns rarely. However, plants kept indoors may occasionally encounter problems with spider mites on plants, different types of scale insects, and playing host to mealybugs.

As a solution to pests, wipe the foliage with a cotton ball or cotton swab dipped a few seconds in soapy water. You can also wash your plant under running water but try not to soak the soil. Otherwise, it may lead to a root rot.

Crown of thorns can acquire root rot if overwatered or planted in dense soil. If root rot sets in, saving the plant becomes highly impossible. You may need to take cuttings and start over.

More on –> Succulent Root Rot

How to Propagate

Making new plants and growing crown of thorns makes an easy planting hobby. Read on to learn more.

  • Simply take tip cuttings from your younger branches during the growing season. Use a clean, sharp blade (e.g. a razor blade) to take the cutting at the point where the branch meets the trunk.
  • Quickly dip the end of your cutting into warm water to prevent the sap from running out.
  • Lay your cuttings on a paper towel or newspaper for a few days to dry and callus the ends.
  • Prepare a pot of damp sand.
  • Dip the callused ends of the cuttings into a rooting hormone product like this one.
  • Poke the callused ends of your cuttings into the wet sand.
  • Place the pot in a warm (75°F) location with bright indirect light and wait. Refrain from watering for a couple of weeks.
  • Within a few weeks, your cutting will develop roots. You can tell by tugging gently on the cutting. If it offers resistance, you know that roots formed already.
  • After about a month, new signs of growth will appear. At this point, begin watering lightly.

Use this method to help your plant recover from root rot. This also works great with propagating your crown of thorns plants.

Propagation of cuttings makes an excellent way to add new and exciting specimens to your collection.

Crown Of Thorns Varieties

A wide range of hybrids and cultivars makes up the list of available Euphorbia Milli species. Look for interesting specimens such as:

  • American Beauty – produces incredibly gorgeous scarlet red blossoms.
  • Short and Sweet – this Euphorbia belongs to the dwarf category. It also produces showy, very attractive bright red bracts we call “red flowers.”

Some of the “New” Crown Of Thorns on the market!

  • Hot Pink Crown of Thorns – Loves a sunny location
  • Golden Crown of Thorns Known as Euphorbia splendens ‘Dinni’

While red serves as the traditional blossom color for these popular house plants, an entire group of California hybrids also features strong and sturdy stems. They appear enormous and hold larger flowers in colorful hues ranging from pink to peach to yellow. Among these are:

  • Vulcanus
  • Saturnus
  • Rosalie

Above lists a few of the intriguing cultivars and hybrids available today. Below are several

Apart from being easy to grow, they look great and even stand out from a bunch of potted plants.

Gathering a complete collection of crown of thorns plants for your home and garden functions is a fun, fascinating and absorbing hobby.

Gardening FAQ

Crown of Thorns (Euphorbia milii) can be propagated from cuttings. Water your plants one or two days before taking cuttings–this will ensure that the cuttings have enough water in their stems. With a sterile cutting tool, cut off the top 3-4 inches of the stem. Choosing longer stems will help shape your plant. Make sure the stems you cut have leaves on them. Spray the cut end with cool water to stop the sap from flowing. The sap can irritate your skin and stain clothes and furniture; you may want to wear gloves and protect your eyes.

Place cuttings on a paper towel for 2-3 days to give the wound time to callous over–a step needed to help the cutting root. Remove most of the leaves on the cuttings, leaving on 3 or 4. Keep the cuttings out of direct sun at this time. Pot up in a soil mix that has good drainage. You might hear about different mixes, but good drainage is the important point. Adding horticultural sand (not beach sand) or perlite will improve drainage.

Once the pots are filled with potting mixture, make a hole with a pencil or your finger about 1 1/2 inches deep. If you have rooting hormone powder, pour a little in a small container and dip the cut end into it–just enough to coat it, not more. Dispose of any remaining hormone powder. Place the powdered, cut end into the hole, then gently firm the soil around the cutting. Place the pot in an area with bright light but out of direct sun.

Water the cutting sparingly after you are finished. Then water every few days, but only enough to keep the soil damp. (Do not water as you normally would because the new plant has no roots yet to absorb the water from the soil and you might cause rot.) It will take several weeks before the cutting roots out and gets established. Once you start to see new growth you can begin to water normally. That’s it!

For tips on a variety of gardening topics, see our Plant Information Guides.
– Courtesy of NYBG Plant Information Service

Crown of Thorns Plant- Euphorbia Milii- Spurge

Crown of thorns or euphorbia is an annual flowering plant in the family Euphorbiaceae. Gardeners grow some of these varieties as ornamental houseplants. These plants are native to North America, South Africa, and Madagascar countries. Thorn plants are grown as landscape because of its drought and heat tolerant properties. The Plant has poisonous milky white sap with floral structures of flower heads. Flowers do not have petals and sepals like other flowering plants. Roots are thick, fleshy and tuberous. Leaves are arranged alternately and appear in whorls.

Here in this article, we shared the detailed information about euphorbias or crown of thorns which is used as the air-purifying plant and as ornamental plants to decor your home.

These plant leaves turn yellow, root rot and pests & disease problem. It is mainly due to the lack of caring for the euphorbia plants. We come up with a solution to these sort of problems and you can know them detailed in this article.

Euphorbia Varieties

There are more than 2000 varieties cultivated worldwide for its ornamental purposes and fragrant flowers. Many of these plant species are succulent, thorny and grow well in tropical & sub-tropical regions of warm temperatures.

S. No Plant Variety
1 Euphoriba Milii Bevilaniensis
2 Euphoriba Milii Hislopii
3 Euphoriba Milii Imperatae
4 Euphoriba Milii Longifolia
5 Euphoriba Milii Roseana
6 Euphoriba Milii Tenuispina
7 Euphoriba Milii Vulcanii

How to Grow Crown of Thorns Plant?

Euphorbia plants are popular houseplants of your garden. These plants may vary in hardy temperate zones. Here is the step by step procedure to grow crown of thorns starting from seeds.

Crown of Thorn Plant Information

Family : Spurge

Scientific Name : Euphorbia milii

Origin : Madagascar

Soil : Well-drain fertile soil with 6-7.5

USDA Zone : 8-11

Sunlight : Full sun to partial shade

Temperature : 60-90F

Plant Height : 5-6 feet

Flowers : Red, pink, white, yellow

Fertilizers : N-P-K fertilizer, Baking soda

Harvesting Time : 1-2 years

Choose a Seed Variety

Select a silver leaf seed variety that is well suited to grow in a sunny location. Euphorbia myrsinites and euphorbia rigida varieties are good to grow to start from seeds. Variegated Euphorbia looks best in bright places if they grow in warmer climates.

Pot & Soil

Choose a pot of size 6-8 inches tall to start growing from seeds. The pot is made up of clay or ceramic and has holes at the bottom to drain water completely.

Euphorbia plants are tolerant to low-quality soils and usually prefer well-drain soil so that the air can circulate within the roots. Either you can prepare soil or buy from a nursery store containing 2 parts soil and 1 part peat moss, sand, and perlite.

Water & Sunlight

Provide them light moisture by supplying sufficient amount of water to the plants. It helps to prevent the powdery mildew disease when watered under the plant roots.

Euphorbia plants thrive quickly when the room temperature is between 65-75F. These plants can withstand if the temperature is below 50F in winter season and 90F in the summer season. Seeds germinate slowly and may take 2-3 weeks to month time. These plants do not like disturbing the roots so the best place to grow them pots.

Nutrient Deficiency

S. No Element Deficiency symptom
1 Nitrogen Yellowish green leaves, curled, wrinkled
2 Phosphorus Light green color leaves and dried petals
3 Potassium Dark green and erected leaves
4 Magnesium Yellow leaves, interveinal chlorosis

Pests & Diseases

Pests Diseases
Mealybugs Powdery mildew
Spider mites Root rot
Aphids Damping off
Thrips Tobacco mosaic virus
Caterpillars Leaf yellowing
Nematodes Fusarium wilt

Pollination

It is the process in which pollens are transferred from stamen to stigma through wind and insects like honey bees, hummingbird, and beetles. Pollination in euphorbias can be achieved by using a brush with fine hair and transferring the ripe pollen.

Pruning

To keep the crown of thorns plants to the ground level, cut back the branches while leaving the auxiliary buds and sprouts. Remove dead leaves and flowers from the surface of the soil. This will help the soil to aerate and prevent from fungal diseases.

Fertilizers

Thorn plants remain healthy even though you do not fertilize the plant occasionally. Watering too much helps to dissipate chlorine from the soil. So as to improve the soil fertility and flower blooming use a balanced fertilizer N-P-K in the ratio for 10-10-10. If you don’t find an NPK fertilizer then you can use organic compost, manure and Baking soda for better growth of euphorbias. Apply the fertilizers once in a week during the growing season around the base of the plant, where weather begins to cool and days become shorter.

Harvesting

During the 1st growing season euphorbias will not bloom flowers. They start blooming flowers from the 2nd season and some other varieties may take years. To harvest the fragrant flowers, the plant should mature completely and reach to a height of 2-3 feet tall.

Now harvest the euphorbia flowers early in the morning or evening using a sharp knife or scissors or simply pluck flowers using hands. Wear gloves so as to protect yourself from allergies.

Can you Propagate Crown of Thorn Plants from Cuttings?

To propagate euphorbias, you can prefer stem cutting or V-grafting method to grow. Propagating this method from cuttings is easy than growing from seeds which take less time to mature the plant and flower blooming.

Stem Cuttings

During spring season the flower buds emerge, take tip cuttings with 3 pairs of leaves and by cutting (1/4) inch below the leaves. Here is the simple procedure that completely explains the growth of crown of thorn plants from cuttings.

  • Take a stem cutting of size 6 inches from a healthy thorn plant and the selected stem should be young but not too small.
  • Trim off the lower leaves of the stem cutting using a sharp knife or blade.
  • Now place the stem cutting in a jar of water and change water for every 2-3 days.
  • Place the entire setup near window location to receive sunlight for a minimum of 6-8 hours a day.
  • It helps cuttings to get sufficient nutrients and may take 2-3 weeks time to establish roots.
  • Euphorbia plant matures, grows to a height of 2-3 feet tall and is ready to transplant outdoors.

This method is mostly preferred to recover the plant from root rot. It is an excellent way to add new species to your garden space.

V-Grafting

Euphorbia plants can also be propagated through V-grafting method. This grafting method is mostly used for its cultivators by growers. Grafting is mostly used to join parts from 2 or more plants so as to appear as a single plant. In this method, the upper part of the plant grows on the root stem of another plant.

The stock plant is cut 2-3 inches above the soil and a deep V-shaped is made into the stock. Now insert scion into the stock and wrap together using a grafting tape. This grafting method helps to promote the plant growth by producing fragrant flowers with high yielding crop plants.

Division Method

You can easily propagate crown of thorns by the division of parent plants. Take out the plants from the ground level and remove the soil from roots by washing with water. Allow the roots to dry for some time or cut immediately with a sharp knife. Each division must have several eyes and roots to propagate effectively.

Now place the crown of thorn plant division in a well-drain fertile soil. Water the divisions regularly and allow it to receive sunlight (6 hours a day) by placing it near window site. When it grows to a height of 10-12 inches tall you can transplant it to outdoors or encourage growing landscape.

How do you Care for Euphorbia Plants?

  • Do not place the euphorbia plants in extremely cool conditions.
  • Make sure the plant receives sunlight for a minimum of 6-8 hours a day.
  • Avoid using fungicides as it can damage the foliage of Euphorbia plants.
  • Use clay or ceramic pot that has holes at the bottom for proper drainage.
  • Re-pot the thorn plant every year in the spring season when the root grows rapidly.
  • Keep children and pets like dogs & cats away from the plants when you fertilize.
  • Wear protective clothes, gloves, and goggles while pruning the crown of thorns plant.
  • Fertilize the plants with organic matter once in every week during the growing season.
  • Follow the instructions & warning labels on covers when you purchase them before planting.
  • Do not overwater as the plant absorbs too much of water from roots and result in root rot disease.
  • Adding mulches (dead leaves, ripe fruits & vegetables) at the base of the plant to improve soil fertility and maintain moisture levels.

What are the good companion plants for euphorbia plants?

Combine euphorbia plants with bulbine, succulents, leucadendron, lavender, purple heart and salvias to improve the plant growth. These companion plants help to deter pests, improve soil fertility and overcome diseases problem when planted in the outdoor garden.

How deep should you plant in the soil?

The stem cutting should be planted in such a way to a depth that will remain secure. If you insert too much of the stem into the soil then it may absorb more amount of water which results in root rot disease. So it’s better to plant euphorbias 4-6 inches deep under the ground level to support the base with strings. add a layer soil containing 2 parts of garden soil and 1 part peat moss, sand & perlite.

How often you water crown of thorns?

You can start watering crown of thorns plant when it reaches to a height of few inches (hardly8-12 inches). Water the plant regularly in small amounts. During the summer season, water the plant in excess (1-2 inches per week) so as to withstand in extreme hot climatic conditions and very often in winter.

Will euphorbias survive in winter?

Euphorbias plants can tolerate full sun to partial shade conditions. It is a hard flowering crop plant that is grown for its beautiful ornamental fragrant flowers. When you start planting euphorbias bring it to indoors (rooms) as the young plant of size 6-8 inches cannot tolerate cool weather conditions. But mature euphorbia plants can withstand up too 50F in the winter season.

How to repot crown of thorns?

Crown of thorns or christ plant has thorns lining at its stems and branches. In addition to the pruning, you must repot the thorn plants in summer season of every year. As it grows bigger and bigger the plant leaves, stems and roots develop accordingly. So when you have planted the thorns in pots, there may be chances of roots emerging out of the pot. At this stage, you need to repot the plant for a better growth.

Why my crown of thorn leaves turning yellow?

Stems of thorn plant get mushy and the leaves fall off, turn yellow when the soil is too wet. To overcome this problem move your thorn plant to a warm bright location where there is good air circulation. Allow 50% of the soil of crown of thorns plant to dry out before you water the plant again.

For more information: Why are my plants turning yellow?

Is Euphorbia plant poisonous?

Yes, euphorbia plants are poisonous as it contains poisonous sap even when touching the plant. The sap of the plant is typically milky white and much dangerous to your pets when the consumed result in drooling, allergic reactions, vomiting and diarrhea symptoms.

What are the medicinal uses of the crown of thorn plants?

The plant is often used as traditional Chinese medicine and as hedging plants in many parts of Africa. Some parts of the plant above ground contain a chemical compound called ingenol mebutate in medicine to treat asthma, chest congestion, and bronchitis. Few people use the plant leaves to cause vomitings.

Start growing crown of thorns plants in pots or outdoors that adds beauty to your home garden. If you have amazing ideas about growing crown of thorns, please share your experience with us in the comment section.

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Crown Of Thorns Plant

Crown Of Thorns Plant: In Thailand it is said that the number of flowers on a Euphorbia crown of thorns plant foretells the luck of the plant keeper. Over the past 20 years, hybridizers have improved the plant so that it produces more and larger flowers (and if the saying is true, better luck) than ever before. In the right setting, hybrids of Euphorbia (crown of thorns) bloom almost year round.

Crown of Thorns Plant Care is not difficult, and it rewards you with its never-ending colorful blooms. Find out everything in detail in this Growing Crown of Thornsguide.

Crown Of Thorns Plant

Crown Of Thorns Plant Care

From spring through late fall, water the crown of thorns plant when the soil is dry at a depth of about an inch, which is about the length of your finger to the first knuckle. Water the plant by flooding the pot with water. After all of the excess water has drained through, empty the saucer under the pot so that the roots aren’t left sitting in water. In winter, allow the soil to dry to a depth of 2 or 3 inches before watering. Feed the plant with a liquid houseplant fertilizer. Water the plant with the fertilizer every two weeks in spring, summer and fall. In winter, dilute the fertilizer to half strength and use it monthly. 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. As potting soil ages, it loses its ability to manage water effectively, and this can lead to root rot and other problems. Wear gloves when working with crown of thorns. The plant is poisonous if eaten and the sap causes skin irritations. Crown of thorns is also poisonous to pets and should be kept out of their reach.

crown of thorns plant care

If you’re looking for a plant that thrives in the conditions inside most homes, try the crown of thorns plant (Euphorbia milii). Growing the plant is easy because it adapts well to normal room temperatures and in dry indoor environments. It also forgives occasional missed waterings and feedings without complaint. Crown of thorns houseplant care begins with placing the plant in the best possible location. Place the plant in a very sunny window where it will receive three to four hours of direct sunlight each day. Average room temperatures of between 65-75 F. (18-24 C.) degrees Fahrenheit are fine. The plant can withstand temperatures as low as 50 F. (10 C.) in winter and as high as 90 F. (32 C.) in summer.

If you’re growing crown of thorns outdoors, choose a sunny location that is windy. When growing indoors or on a balcony, locate it near the Southern or Western window, where it can receive part sunlight to full sunlight and proper air circulation. In can tolerate shade as well, but grows poorly without flowers.

Tip: It’s a great low care plant for dry, windy, and coastal locations.

Soil

Crown of thorns (Euphorbia milii) is not picky about soil, as long as it is light and drains well. Succulent or cactus soil mix of gritty and light texture is the best. Although it can grow in poor soil, you can still add a small amount of compost and organic matter at the time of planting.

It is a drought tolerant plant that stores water in its thick stems, which means it doesn’t need regular watering. Infrequent and occasional but deep watering is required, only when the top 2 inches of soil is dry. Keep this plant on a drier side to get more blooms but do remember that too much lack of water for a long time causes the leaves and blooms to fall off from this plant.

Tip: If you’re growing crown of thorns in a cool climate, reduce watering in winters.

Fertilizer

The plant does well in lack of nutrients and usually go on without fertilizer when growing on the ground. Though in container culture, it requires fertilizer but in a small amount. Apply quarter (1/4) strength balanced liquid fertilizer every month in the spring and summer. In hot climates, you can fertilize year round. If you’re using granular fertilizer, feed the plant once in 3 months.

Note: Reduce or increase the fertilizer strength according to your plant’s requirement.

Tip: Feed the plant with a fertilizer that is boron-free or has low levels of this micronutrient. Crown of Thorns is extremely sensitive to increased boron levels in the soil.

Temperature and Humidity

This is a desert plant and prefers warm growing conditions. Temperature above 65 F (18 C) is optimal for its growth. In cold climates, when the temperature goes down, the crown of thorns starts to slow down its growth or become dormant.

Crown of Thorns plant doesn’t care about humidity levels and grows well in the dry air.

Tip: Keep it away from cold drafts, frost, and freezing temperatures.

Jesus Crown Of Thorns Plant

The Crown of Thorns (Euphorbia milii) is an evergreen succulent that produces colorful bracts of red, pink or orange colors around the mini flowers like the poinsettia, continuously. It’s named Crown of Thorns due to a legend that the Thorny Crown of Jesus was made from this plant’s stems.
This easy-care succulent houseplant is originated in Madagascar and can be grown indoors year-round in any part of the world. In areas with frost-free winters, growing Crown of Thorns outdoors is possible.

It is an ideal outdoor plant for tropical, seaside locations since the plant thrives in a salty environment. It also handles drought so well, perfect for dry regions with water scarcity.

Crown Of Thorns Plant Leaves Turning Yellow

Crown Of Thorns Plant Leaves Turning Yellow

Despite its somewhat off-putting name, crown of thorns is a very pretty succulent plant that can bloom almost year round, even indoors. Although crown of thorns can grow into a woody shrub, it is also an ideal houseplant for most homes. It likes the same room temperature that people enjoy and it can handle the lack of humidity prevalent in most homes during the winter.

The name Crown of Thorns is derived from the belief by some that the crown of thorns worn by Jesus Christ at his crucifixion was made from stems of this plant.

Caution: Besides the sharp black thorns on its main branches and stems, the sticky, latex sap from broken leaves and stems can be a skin and eye irritant. If ingested, all parts of the plant are toxic to people and pets.

  • Leaves – The thick, bright green leaves grow along the new stem growth.
  • Flowers – The true flowers are small and green, surrounded by showy bracts in red, orange, pink, yellow or white.

Botanical Name

Euphorbia milii

Common Names

Crown of Thorns, Christ Plant, Christ Thorn, Corona de Criso

Hardiness Zones

Crown of thorns is only perennial in USDA Hardiness Zones 9 – 11. In colder climates, it is often grown as a houseplant.

Sun Exposure

As with most flowering plants, the better the sun exposure, the more blooms you will get. However, crown of thorns will reliably bloom as long as it gets at least 3 – 4 hours of bright, direct sunlight per day. Outdoors, aim for a spot full sun. Indoors, place your plant in a west or south facing winter during winter.

Bloom Period

Crown of thorns will repeat bloom throughout the year. The actual flowers are the insignificant green centers, but they are surrounded by showy bracts that look like colorful petals.

Mature Plant Size

Outdoors, crown of thorns will grow into a shrub reaching 3 – 6 ft. tall. As a houseplant, expect it to reach only about 2 ft. in height.

Crown Of Thorns Plant Outdoors

Crown Of Thorns Plant Outdoors

Give the plant plenty of room outdoors. You do not want to accidentally back into it. Crown of thorns makes an excellent specimen plant. Give it some renewal pruning at the end of the season, cutting away any older, fading leaves to encourage new growth.

Container grown crown of thorns can spend the summer out of doors wherever you need color or interest. Be sure to bring it inside before nighttime temperatures dip below 50 degrees F.

Of course, you can keep your crown of thorns indoors all year. In a bright window, it will perk up any season.


In the late 1800’s, Dr David Green became famous for curing heart conditions using a strange liquid medicine he prepared himself. No matter how many times he was asked, he would never reveal the recipe for his miraculous heart tonic. The mysterious medicine was a tincture of the ‘crown of thorns’ plant.
And Dr Green wasn’t the only doctor at the turn of the century using it.
Word began to spread… and stories like this poured in from doctors around the world, crown of thorns extract was poised to become the ultimate cure for heart disease… but then this powerful natural treatment virtually disappeared from medical bags of doctors across the country.
The reason: around this time the first drug companies rose to power, squashing natural therapies as they pushed pharmaceuticals on the unsuspecting public.
While crown of thorns extract has fallen out of favour in the U.S., it has been thoroughly researched in Europe. One study put it head-to-head against the leading drug prescribed for heart failure. The result? Crown of thorns was as effective as the prescription, with virtually none of the dangerous side effects. It quickly and safely eases the burden of a weak heart… and has saved thousands of lives in Europe.
It has the potential to treat more than just heart failure. It could improve peripheral circulation and safely lowers elevated blood pressure. Scientists have even found that it helps make the hearts muscular tissue more efficient, which could help your heart last many years longer!
Crown of thorns extract is also a powerful antioxidant, which means it could help cool down inflammation in your blood vessels that leads to atherosclerosis, heart attacks and strokes.
With so much hype around this herb it is a pity that its botanical name is not mentioned. Hawthorne Berry Extract, one of the main ingredients in Cardio-Fast Capsules. So whenever you read about the miracle of Crown of Thorns, remember it is available in our Cardio-Fast formula.
This information is bought to you as a free service from DNA Biopharm South Africa. The information herein is not intended to treat or diagnose any condition. Should you wish to try any herbal or natural remedy discussed in these pages, please consult with your health care practitioner. Should you require any information or advice on any topic related to diabetes, please visit our website at www.dna-biopharm.com

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