Plant Care Crown of Thorns

Crown of Thorns

4.6 out of 5 (24 experiences)

Crown of Thorns has a Survivor plant personality Survivor
Crown of Thorns has a Blooms easily plant personality Blooms easily

About Crown of Thorns

The crown of thorns Euphorbia is a relatively common flowering houseplant that comes with a pop of color during the blooming season. Native to Madagascar, they are used to repel snails due to the toxic compounds in their sap. The sap can be irritating to humans as well, so be sure to handle with care! ⚠️

Taxonomy

Euphorbia milii
Euphorbia
Euphorbiaceae
Malpighiales

How to care for Crown of Thorns

💦 Water

How often to water your Crown of Thorns

Water needs for Crown of Thorns
0.5 cups
every 12

Crown of Thorns needs 0.5 cups of water every 12 when it doesn’t get direct sunlight and is potted in a 5" pot.

Use our water calculator to personalize watering recommendations to your environment or download Greg for more advanced recommendations for all of your plants.

Calculate water needs of Crown of Thorns

Water 0.5 cups every
12

Does your plant get direct sunlight?

Select the pot size

5"
☀️ Light

Finding light for Crown of Thorns in your home

Light needs and placement for plant Crown of Thorns: 1ft from a window
1ft or less from
a window

Crown of Thorns love being close to bright, sunny windows 😎.

Place it less than 1ft from a south-facing window to maximize the potential for growth.

Crown of Thorns does not tolerate low-light 🚫.

Select your region to see how the current weather in your area affects the placement of Crown of Thorns in your home 🏡.

🪴 Nutrients

How to fertilize Crown of Thorns

Nutrient, fertilizer, and repotting needs for Crown of Thorns: repot after 2X growth

Most potting soils come with ample nutrients which plants use to produce new growth.

By the time your plant has depleted the nutrients in its soil it’s likely grown enough to need a larger pot anyway.

To replenish this plant's nutrients, repot your Crown of Thorns after it doubles in size or once a year—whichever comes first.

Browse #Euphorbia
💡 FAQs
⭐ Difficulty Level

Crown of Thorns is generally easy to care for, though some plant parents report facing challenges with growing it. Check out the reviews down below to read more about their experiences!

Benefits of Growing Crown of Thorns →


💦 Water Needs

Crown of Thorns thrives in dry soil and should be watered sparingly. Use our water calculator to personalize watering recommendations to your environment or download Greg for more advanced recommendations for all of your plants.

Crown of Thorns Water Frequency →

Crown of Thorns Root Rot →


☀️ Sunlight Needs

Crown of Thorns requires abundant, bright and direct light. Place it less than one foot from a window to ensure it receives enough light to survive 💪. Select your region to see how the current weather in your area affects the placement in your home 🏡.

Crown of Thorns Light Requirements →

Crown of Thorns Direct Sunlight Needs & Tolerance →


🐶 🐈 👶 Toxicity

Crown of Thorns is not safe to consume. If you, a family member, or a pet has ingested any amount of plant material contact Poison Control, US (800) 222-1222, or your veterinarian. If you have children, cats, or dogs in the home, we suggest keeping this plant out of reach.


💨 Humidity

Crown of Thorns enjoys lots of humidity. Provide humidity for your plant by watering regularly and thoroughly, since plants absorb most water through their root system rather than their leaves. They may also benefit from being placed next to a humidifier.

Crown of Thorns Humidity Needs →


🪴 Soil

Crown of Thorns is very sensitive to wet soil, so choose a potting soil that drains very well and doesn’t retain too much moisture. A good soil will have lots of perlite or vermiculite for drainage and some organic matter for nutrition. A few handfuls of perlite added to regular store-bought cactus soil will do the trick!

Best Soil Mix for Crown of Thorns →

When and How to Successfully Repot Crown of Thorns →


💩 Fertilizer

Crown of Thorns grows very slowly and doesn’t require added fertilizer. Replacing your plant’s potting soil once a year should provide them with more than enough nutrition. Remember, plants get their energy from sunlight, not fertilizer!

How Much and When to Fertilize Crown of Thorns →


❄️ Dormancy

It’s common for Crown of Thorns to go dormant in the wintertime and you may notice their growth slow down. Waterings should be spaced out more during this time.


🌎 Native Region

Crown of Thorns is native to Worldwide.


🌸 Flowers

Crown of Thorns produces flowers in the wild, but does not flower when kept as houseplants.


⬆️ ⬇️ Growth Pattern

Crown of Thorns will branch off as it grows. To encourage branching, pinch off the newest growth at the tip and the stem will branch off into two.

How and When to Prune Crown of Thorns →


🌦️ Growing Outdoors

USDA Hardiness Zone
Crown of Thorns can be grown outdoors in USDA Hardiness Zones 10-12b. Find your local hardiness zone here.

Crown of Thorns Temperature Tolerance →


🌱 Propagation

Crown of Thorns can be propagated by the stem method. To propagate:

  • Make a cut just above the node. The node is the break in the stem where the leaf emerges.
  • To get the cutting to root, you can either:
    • Place the cutting in water until roots emerge and are ~2” long and then transplant into well-draining soil, or
    • Place the cutting directly into well-draining soil and water when dry.

🧐 Troubleshooting

When troubleshooting a sad-looking houseplant, start by checking for signs of distress in its leaves, such as yellowing, browning, or drooping, which can indicate overwatering or nutrient deficiencies.

Inspect the soil moisture; too dry or too wet soil can cause problems.

Ensure the plant is getting the right amount of light, as too much or too little can stress it.

Finally, consider environmental factors like temperature and humidity, and adjust care routines accordingly to revive your plant.


😖 Common Issues

Overwatering is a likely cause of issues with Crown of Thorns. These plants are very sensitive to wet soil so if you notice your plant becoming squishy or translucent, overwatering is the likely culprit.

Cut your plant just past where the rot ends and allow it to callus over for a few days before replanting it in fresh, dry soil. Download Greg to make sure your plant never gets overwatered again!


Care Summary for Crown of Thorns

Crown of Thorns

Crown of Thorns


Greg recommends:

Water

0.5 cups every 12 days

Placement

< 1ft from a window

Nutrients

Repot after 2x growth

Based on the 4” pot your plant is in, and that it doesn’t get direct sunlight.

What other plant parents say

Crown of Thorns has a Survivor plant personality Survivor 16
Crown of Thorns has a Blooms easily plant personality Blooms easily 10
Crown of Thorns has a Fast grower plant personality Fast grower 8
Crown of Thorns has a Large, lush leaves plant personality Large, lush leaves 4
Crown of Thorns has a Easy to propagate plant personality Easy to propagate 3
Crown of Thorns has a Browns easily plant personality Browns easily 3
Crown of Thorns has a Pest magnet plant personality Pest magnet 1
@LoyalLentil avatar
@@LoyalLentil
leaf-1 3 Plants
xp 44 XP
globe Minneapolis, MN
12/20/2021

Be prepared to have this forever- my dad gave me this after having it for over a decade!

Survivor Survivor
@TedNYC21 avatar
@@TedNYC21
leaf-1 20 Plants
xp 349 XP
globe New York
08/11/2021

Beautiful, but watch out for those thorns behind the leaves!

Large, lush leaves Large, lush leaves
Fast grower Fast grower
Blooms easily Blooms easily
Survivor Survivor
@Stubby avatar
@@Stubby
leaf-1 22 Plants
xp 1,790 XP
08/04/2021

I feel like I do nothing for this plant and it just thrives off of neglect. Plus, it always has new beautiful flowers coming in which is awesome

Fast grower Fast grower
Blooms easily Blooms easily
Survivor Survivor
@Erodplants avatar
@@Erodplants
leaf-1 110 Plants
xp 2,758 XP
07/03/2021

I love this plant, it was given as a gift. The blooms have been since June 2nd , not direct sun but near sun for sure. Water once a week.

Blooms easily Blooms easily
Survivor Survivor
Claire avatar
@Claire
leaf-1 2 Plants
xp 230 XP
06/21/2021

It's thorny hence why I named mine Thor lol

Survivor Survivor
Fast grower Fast grower
@ErickaLyn78 avatar
@@ErickaLyn78
leaf-1 22 Plants
xp 311 XP
globe Port Angeles, WA
06/21/2021

This is my all time FAVORITE houseplant. I’ve never had one before and when I bought it at the store there was no tag identifying what it was but this plant it so cool! I have it in my kitchen window. It blooms all the time!!

Blooms easily Blooms easily
Survivor Survivor
Fast grower Fast grower
@jennalea__ avatar
@@jennalea__
leaf-1 26 Plants
xp 606 XP
globe Dallas, TX
06/10/2021

I took this plant the day of my grandmother funeral. These were her favorite plants she had and taking cuttings from her garden to bring back to my home 8 hours away helped me cope. This plant sat in water for a few months, rooted and I planted it into soil. Now there has been times where I thought it was going to die on me but it shows signs of improper care before it starts to die. This plant is my most prized possession.

Easy to propagate Easy to propagate
Survivor Survivor
Blooms easily Blooms easily
@tonim419 avatar
@@tonim419
leaf-1 2 Plants
xp 64 XP
06/08/2021

says it’s hardy but not for me…she’s dying 😭

Browns easily Browns easily
@Willisholden avatar
@@Willisholden
leaf-1 10 Plants
xp 158 XP
globe Dunedin, Otago
05/14/2021

You may have to move it away from the window at night if it gets frosty. It loves direct sun. But don’t water it during peak sun, the leaves could burn. It is from Madagascar, so make sure the soil matches. Good drainage and a terracotta pot works wonders. I had to bring back mine from the dead.

Survivor Survivor
@undomesticatedturtle avatar
@@undomesticatedturtle
leaf-1 2 Plants
xp 96 XP
globe Morgantown, WV
05/12/2021

The plant does not tolerate soaked soil so make sure to prioritize drainage. It produces small, but vibrant and beautiful pink flowers and has done so regularly for me outside of winter time. The flowers and the leaves however are extremely brittle and fragile.

Blooms easily Blooms easily
Browns easily Browns easily
@JimbyJoop avatar
@@JimbyJoop
leaf-1 5 Plants
xp 340 XP
05/11/2021

when i moved it to direct sunlight, at first the leaves dropped and it lost its flower, but it’s recovered after the shock. low maintenance, unless you really want to get a flower

Survivor Survivor

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