Euphorbia trigona

RHS Plant Profile
African milk tree

Other common names

marble column

Synonyms

Euphorbia hermentiana

Cactus Succulent

A tender, slow-growing architectural, succulent shrub producing very upright stems and branches to 1.8m (6ft) high. These are green and three to four sided with short-lived, oval, mid-green leaves and persistent reddish-brown spines produced along the ridges of the stems. Along each side of the stems are variable, V-shaped bands in pale grey-green. Small, insignificant pale-green flowers can be produced in spring and summer at the tops of the stems, but these are unlikely to be produced on plants when grown in the home

Position

Full sun, Partial shade

Soil Types

Loam, Sand

Max Height

2.5-4 metres

Max Spread

0.5-1 metres

Size

Time to Maturity
10–20 years
Max Spread
0.5-1 metres
Max Height
2.5-4 metres

Growing Conditions

Loam Sand
Moisture
Well–drained
pH
Acid or Alkaline or Neutral

Position

Full sun Partial shade
Aspect
South–facing or West–facing or East–facing
Exposure
Sheltered
Hardiness
H2
Drought Resistance
Yes

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Euphorbiaceae
Native to GB/Ireland
No
Foliage
Evergreen
Habit
Columnar upright
Potentially harmful
Humans/Pets: IRRITANT to skin/eyeharmful if eaten. Wear gloves and other protective equipment when handling. For further information and contact numbers regarding pets, see the HTA guide to potentially harmful plants
Genus
Euphorbia can be annuals, perennials, shrubs or succulents, with milky sap and small flowers held within cupped, often colourful bracts
Name Status
Correct
Plant Range
C Africa

How to Grow

Cultivation

Grows best in well-drained soil, in full sun to partial shade. See houseplant cacti and succulent cultivation for further details

Propagation

Propagate by cuttings in spring or early summer; dip cut surfaces in charcoal or lukewarm water to prevent bleeding

Suggested planting locations and garden types

  • Houseplants
  • Patio and container plants
  • Conservatory and greenhouse

Pruning

Prune when required to reduce size in early spring

Pests

May be susceptible to mealybugs

Diseases

Generally disease-free