General Plant Information (Edit)
Plant Habit: Shrub
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
Bloom Size: Under 1"
Flower Time: Year Round
Other: Varies
Suitable Locations: Xeriscapic
Uses: Will Naturalize
Dynamic Accumulator: B (Boron)
Wildlife Attractant: Bees
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

Common names
  • Crown of Thorns
  • Siamese Lucky Plant
  • Euphorbia
  • Corona de Cristo
  • Christ Plant

Photo Gallery
Location: Portland Nursery, Portland Or.
Location: My garden
Date: November 2016
Location: My garden
Date: November 2016
Location: My garden
Date: November 2016
This plant is tagged in:
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  • Posted by Dutchlady1 on Sep 29, 2011 2:04 PM concerning plant:
    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.
  • Posted by plantladylin (Sebastian, Florida - Zone 10a) on Oct 21, 2011 11:57 AM concerning plant:
    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.
  • Posted by Baja_Costero (Baja California - Zone 11b) on Jun 8, 2017 1:52 PM concerning plant:
    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.
  • Posted by SongofJoy (Clarksville, TN - Zone 6b) on Oct 26, 2011 12:59 PM concerning plant:
    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.
  • Posted by chuck7701 (McKinney, TX (DFW) - Zone 8a) on Mar 22, 2015 11:07 AM concerning plant:
    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.
Plant Events from our members
Suga On November 5, 2016 Obtained plant
Ordered from Logee's and it is supposed to be a dwarf 🌱 r
MotherMycelium On February 2, 2021 Plant Ended (Removed, Died, Discarded, etc)
Rot got him
MySecretIslandGarden On July 8, 2022 Cuttings stuck
Started to get some root rot. Removed the damage and stuck cuttings into a new pot with a cactus.
» Post your own event for this plant

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
Hummingbirds and crown of thorns by MySecretIslandGarden Jun 4, 2022 3:30 PM 1

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