Crown of Thorns (Euphorbia milii) in the Euphorbias Database

Common names:
Give a thumbs up Crown of Thorns
Give a thumbs up Siamese Lucky Plant
Give a thumbs up Euphorbia
Give a thumbs up Corona de Cristo
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General Plant Information (Edit)
Plant Habit: Shrub
Cactus/Succulent
Life cycle: Perennial
Sun Requirements: Full Sun to Partial Shade
Water Preferences: Mesic
Dry Mesic
Plant Height: 24-36 inches
Plant Spread: 20-24 inches
Fruit: Pops open explosively when ripe
Flowers: Showy
Other: In the genus Euphorbia, the flowers are reduced in size and aggregated into a cluster of flowers called a cyathium (plural cyathia). This feature is present in every species of the genus Euphorbia but nowhere else in the plant kingdom.
Flower Color: Orange
Pink
Purple
Red
White
Yellow
Bi-Color
Bloom Size: Under 1"
Flower Time: Year Round
Other: Varies
Suitable Locations: Xeriscapic
Uses: Will Naturalize
Dynamic Accumulator: B (Boron)
Wildlife Attractant: Bees
Hummingbirds
Resistances: Deer Resistant
Drought tolerant
Toxicity: Leaves are poisonous
Roots are poisonous
Other: All parts of Euphorbias can be toxic
Propagation: Other methods: Cuttings: Stem
Cuttings: Tip
Pollinators: Bees
Containers: Suitable in 1 gallon
Suitable in 3 gallon or larger
Needs excellent drainage in pots
Miscellaneous: With thorns/spines/prickles/teeth

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The ATP Top 50 Xeriscapic PlantsThe ATP Top 50 Xeriscapic Plants
By dave on July 19, 2014

Does xeriscapic mean boring and dry looking? Absolutely not! You'll never believe what beautiful blooms are available for the non-irrigated landscape. Come in and see.

(Full articleno comments)
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Photo gallery:
Location: Longwood Gardens, Kennett Square, Pennsylvania, USADate: 2018-12-25White-flowered form
By csandt
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By Hamwild
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Location: Botanical Gardens of the State of Georgia...Athens, GaDate: 2017-09-05Yellow Crown Of Thorns 003
By dawiz1753
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Location: Winter Springs, FL zone 9bDate: 2015-06-23
By sunkissed
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Location: My gardenDate: 2018-12-22
By queen1694
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By Hamwild
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Location: Winter Springs, FL zone 9bDate: 2017-02-19
By sunkissed
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Location: Botanical Gardens of the State of Georgia...Athens, GaDate: 2017-03-21Golden Crown Of Thorns 001
By dawiz1753
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Date: 2020-04-29
By hlutzow
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Location: Fall Sale
By piksihk
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Location: Parchur, Andhra Pradesh, IndiaDate: 2/19/2016
By chhari55
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Date: 2016-10-03
By Fleur569
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Location: My gardenDate: 2019-01-15
By queen1694
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Location: Parchur, Andhra Pradesh, IndiaDate: 2020-08-28
By chhari55
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Location: Baton Rouge, La. Date: 2013-04-02
By jeri11
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Location:  North latitude    GPS Latitude              16, 1' 40.202" East longitude    GPS Longitude             80, 13' 53.124"
By chhari55
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Location: Winter Springs, FL zone 9bDate: 2016-10-24
By sunkissed
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Location: Botanical Gardens of the State of Georgia...Athens, GaDate: 2017-08-17Golden Crown Of Thorns 005
By dawiz1753
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Location: Botanical Gardens of the State of Georgia...Athens, GaDate: 2017-11-03Crown Of Thorns 004
By dawiz1753
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Location: Parchur, Andhra Pradesh, IndiaDate: 2020-08-28
By chhari55
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Location: In a pot in my front yard, N Watauga TXDate: 2011-10-11Brilliant little flowers
By Debnes
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Location: In our garden - Central valley area, CADate: 2012-04-25Euphorbia milii leafless, showing its thorns and new bracts formi
By tarev
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Location: Photo by graftedno1
By SongofJoy
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By SongofJoy
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By SongofJoy
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Location: Canoga Park, CaliforniaDate: 2011-12-31
By Kelli
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Location: Canoga Park, CaliforniaDate: 2008-04-16
By Kelli
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By Rosegal
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By Rosegal
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Location: central Illinois-Washington Park Botanical Garden -Springfield, Il.Date: 2015-12-05
By jmorth
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Location: Parchur, Andhra Pradesh, IndiaDate: 24mar2016
By chhari55
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Location: Orangeburg, SCDate: 2015-11-29Crown of thorns, red
By Deebie
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Location: Ellis  Date: 2017-02-23
By piksihk
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Location: Winter Springs, FL zone 9bDate: 2016-10-24
By sunkissed
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Location: Botanical Gardens of the State of Georgia...Athens, GaDate: 2017-02-04Crown Of Thorns 008
By dawiz1753
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Location: Botanical Gardens of the State of Georgia...Athens, GaDate: 2017-028-04Crown Of Thorns 009
By dawiz1753
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Location: Botanical Gardens of the State of Georgia...Athens, GaDate: 2017-07-28Golden Crown Of Thorns 003
By dawiz1753
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Date: 2017-09-04
By ljones26
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Date: 2017-11-04
By ljones26
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Location: Coastal San Diego County Date: 2018-06-30
By carlysuko
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Location: Coastal San Diego County Date: 2018-06-30
By carlysuko
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Location: Coastal San Diego County Date: 2018-06-30
By carlysuko
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Location: Coastal San Diego County Date: 2018-06-30
By carlysuko
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By Hamwild
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Location: In our garden - Central Valley area, CADate: 2012-05-16Very first bloom/bract of my Euphorbia milii
By tarev
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Location: At our garden - San Joaquin County, CADate: 2013-08-16Euphorbia millii - all leaves no blooms August 2013
By tarev
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Location: Missouri Botanical Garden (MOBOT) - St LouisDate: 8-9-11
By jmorth
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Location: central IllinoisDate: 11-16-12
By jmorth
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Location: Washington Park Botanical Garden - Springfield, Il.Date: 2016-03-26
By jmorth
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By tarev
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Location: My gardenDate: November 2016
By Suga
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Location: My gardenDate: November 2016
By Suga
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Location: My gardenDate: November 2016
By Suga
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Comments:
Posted by Dutchlady1 on Sep 29, 2011 2:04 PM

I am using these as underplanting for my plumeria since they keep their foliage and blooms throughout the winter in my area, whereas the plumeria are bare.

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Posted by plantladylin (Sebastian, Florida - Zone 10a) on Oct 21, 2011 11:57 AM

Native to Madagascar, Euphorbia milii is a woody, succulent shrub with dense, spiny stems that scramble and climb and can reach to 6'. Blooms appear all year round but especially during the winter months. The flowers are tiny and inconspicuous but the bracts appear in colors from red, pink, yellow and white. The plant exudes a latex sap that can cause severe dermatitis in some individuals.

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Posted by SongofJoy (Clarksville, TN - Zone 6b) on Oct 26, 2011 12:59 PM

As with other Euphorbias, E. milii requires a slightly richer soil than do many succulents. They make good houseplants and are not bothered by low humidity. They also grow well under artificial lights.

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Posted by chuck7701 (McKinney, TX (DFW) - Zone 8a) on Mar 22, 2015 11:07 AM

Propagating this plant is very easy from cuttings or branches broken off main plant. It is a type of succulent, so very hardy. However, any new cuttings or branches broken off NEED TO DRY FOR AT LEAST TWO WEEKS before repotting to harden and seal the pieces. Planting too soon will encourage rot at the cutting site, and you will lose the whole piece.

When cutting, use newspaper or do the cutting on grass as the white sap is very sticky and hard to remove. Do not know about toxicity of sap, but best to be cautious with sap. Goes dormant in the winter and loses all the leaves when I bring it in to overwinter.

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Posted by Baja_Costero (Baja California - Zone 11b) on Jun 8, 2017 1:52 PM

Most crown of thorns in cultivation, especially those with extra large flowers, are not the species E. milii but hybrids (for example with E. lophogona). These hybrids can be quite diverse in form and flower color, and some people collect them for this reason. Provide good drainage and regular water. These plants, from Madagascar, enjoy more water than most succulents, especially in containers, but can be quite drought tolerant, especially in the ground. Easy to start from rooted cuttings. May attract bees and hummingbirds. May branch at the base and/or along stems higher up (depends on the variety). May be self-fertile and self-seed in the container garden. Many/most crown of thorns flower year round in mild climates.

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Plant Events from our members
Suga On November 5, 2016 Obtained plant
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Discussion Threads about this plant
Thread Title Last Reply Replies
crown of thorns by pa2nc Sep 9, 2014 5:11 PM 5
Question by cherryb1ossoms Oct 13, 2015 11:17 PM 3
Help ID my Cacti by kurtlukosius Aug 7, 2020 10:21 PM 6
Spiky House Small House Plant by piperomia22 Apr 15, 2020 12:51 PM 5
Reliable Vendors of Crown of Thorn plants by DonfromPA Feb 24, 2020 8:27 PM 9
When should I bring them inside? by CrazedHoosier Sep 9, 2019 4:17 AM 14
Unknown Flowers by dielectra Aug 18, 2019 2:35 PM 3
Low light succulents? by CrazedHoosier Aug 27, 2019 8:57 AM 170
Flower ID by Jewelsjams123 Jul 18, 2019 6:57 PM 12
Euphorbia Milii spotting leaves issues by QualityLovin Jun 4, 2019 2:02 PM 0
Euphorbia milii - Wood Branches - No Thorns by palms Dec 21, 2019 10:15 AM 2
Indoor plant recommendedations for a sunny South facing bathroom? by Vmcau Jun 14, 2019 1:09 PM 6

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