Crown of thorns

கிறிஸ்து முள்യൂഫോബിയইউফরবিয়া মিলি

Euphorbia milii Des Moul.

light
Full sun
water
Little
tall
1.2 m
wide
71 cm

Euphorbiaceae

Also called Crown-of-Thorns, Christ plant, Christplant

Formerly Euphorbia bojeri, Euphorbia breonii, Sterigmanthe bojeri, Tumalis bojeri

When it flowers

Flowers all year in the tropics.

Read from iNaturalist photographs of it in flower. A month counts at 50% of the best month's flowering share (smoothed over three months) and 10% of its flowering count, from at least 100 flowering observations in the band.

PetsNC State Extension Plant Toolbox lists it as toxic to dogs, cats and horses (25 Oct 2026)
PeopleNC State Extension Plant Toolbox lists it as mildly poisonous (bark, flowers, fruits, leaves, roots, sap, seeds, stems) (25 Oct 2026)

If a child, a pet or anyone may have eaten a plant, contact a doctor or vet straight away, or call the National Poisons Information Centre (AIIMS, New Delhi) on 1800 116 117, free and open 24 hours.

Something wrong with it?

About it

Grows as
Semisucculent subshrub or shrubKew's checklist, not yet checked
Climate
Desert or dry shrublandKew's checklist, not yet checked
Wild in
MadagascarKew's checklist, not yet checked
Light
Full sun (6 h or more)Read from RHS and NC State Extension, checked by a majority of its sourcesBacked by both sources
Height
99 cm to 1.5 mRead from RHS and NC State Extension, checked by a majority of its sourcesBacked by both sources. Sources differ: RHS 1–1.5 m; NC State Extension 3–6 ft
Spread
51 cm to 91 cmRead from RHS and NC State Extension, checked by a majority of its sourcesBacked by both sources. Sources differ: RHS 0.5–1 m; NC State Extension 1.5–3 ft
Water
Little: takes droughtRead from NC State Extension, one source
Flowers
Yellow, redRead from RHS and NC State Extension, checked by a majority of its sourcesBacked by both sources. Sources differ: RHS red, yellow; NC State Extension green, orange, pink, red, white, yellow
Coldest it survives
1.7 °C (USDA zone 10b)Read from RHS and NC State Extension, checked: the middle of what its sources sayHalfway between its 2 sources, which differ. Sources differ: RHS 10 °C; NC State Extension -6.7 °C

Not known yet: heat, hottest it survives.

In other languages (12)

German
Christusdorn
Spanish
corona de Cristo, Tú y Yo, corona de espinas
Chinese
虎刺梅, 鐵海棠, 麒麟花
Portuguese
Coroa-de-Cristo, martírios, bem-casados
French
Épine du Christ, Couronne d'épines, couronne du Christ
Estonian
särav piimalill
Croatian
Kristov trn
Czech
pryšec zářivý, trnová koruna
Russian
Молочай Милиуса, Молочай прекрасный
Indonesian
Kaktus Pakis Giwang, Mahkota Duri
Greek
Αγκάθι του Χριστού
Chinese (China)
虎刺梅, 铁海棠

Where this comes from

A fact “checked by a majority of its sources” was settled by a vote of the pages it was read from, not by a person reading it; one marked “one source” rests on that page alone. Anything else not marked checked has not been checked yet. Where nothing is known, the page says so rather than guess.