Details of...
Scientific Name: Euphorbia milii
Pronunciation: you-FOR-bee-uh MILL-ee-eye
Common Name: crown of thorns
Family Name: Euphorbiaceae
Plant Type: Flowering pot plant
Key ID Features: Leaves obovate, <6 cm long; cyathia with small greenish florets and petal-like red or yellow bracts.
Course(s): HORT 1193/1293

Habit: Upright
Form: Irregular
Texture: Medium
Mature Size:
Height:0.2 - 0.4m
Spread:0.1 - 0.3m
Origin: Africa (Madagascar)
Hardiness Rating: Zone 10: (-1 to 4 C)
Soil/ Growing Medium: Well-drained
Water Use: Low
Landscape Uses: Indoor plant
Additional Info: Google Some images may be of Euphorbia x lomi (E. lophogona x E. milii).
crown of thorns
Leaf Morphology: Glossary
Form: Simple
Arrangement: Alternate
Texture/ Venation: Leathery
Surfaces: Lustrous
Leaf(let) Terms:
Shapes: Obovate
Apices: Acute
Bases: Obtuse
Margins: Entire

Inflorescence Type: Cyathium
Flower Morphology:Flowers perfect
Number of Petals:0
Ovary Position:Superior
Colour (petals): Red, (Showy red or cream bracts)
Flower Time at Peak: Feb, Mar, Apr
Additional Info: Cyathia arranged in a cyme.

Fruit Type: Schizocarp
Fruit Colour: Brown, Green
Fruiting Time:
Additional Info: Mericarps (3) split open to release a single seed
Bark or Stem Colour:
Organ Modifications: Leaf-like bracts, Spines, Succulent stems

Propagation: Stem tip cuttings
Plant Care:
Optimal Temp.: High indoor temperature
Light Level:High indoor light level
Pest Susceptibility: Root rot, Scale insects, ( Drought resistant )
(GNH) GreeNHouse
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