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Crown of Thorns

Euphorbia milii

Family: Euphorbiaceae

Significant varieties: Var. tananarivae/lutea - species

Native Range: Madagascar

Cultural Use/Significance: The common name refers to the legend that this plant was used for Christ’s crown of thorns. It had been introduced to the Middle East prior to this, but it is unknown what plant was truly used.

Cultural Requirements:

Temperature: Above 35° F Above 35° F



Irrigation: Occasionally dry. Some hybrids require more water



Relative Humidity: Low



Fertilizer: Lightly in spring and summer. Sensitive to Boron.



Substrate: Well-drained soils



Light: Full sun. Provide midday shade in hotter areas.



Day Length: Darkness at night is required for flowering



References:



https://plants.ces.ncsu.edu/plants/euphorbia-milii/#:~:text=In%20its%20country%20of%20origin,drained%20soils%20in%20full%20sun.