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Perennials, Tropicals > Euphorbia > Euphorbia trigona > Euphorbia trigona

Euphorbia trigona


African Milk Tree




Origin:  Southwest Africa.
Family
Euphorbiaceae
Genus
Euphorbia
Species
trigona
Category
Perennials, Tropicals
Type
Shrub (evergreen)
Synonyms
Euphorbia hermentiana
USDA Hardiness Zone
9b - 11
Canadian Hardiness Zone
Requires cool season protection under glass.
RHS Hardiness Zone
H3 - H1c
Temperature (°C)
1
Temperature (°F)
12
Height
180 - 240 cm
Spread
90 cm
Photographs
Description and Growing Information
Flowering Period
Landscape
Rock gardens, cacti gardens, potted indoor or patio plant or as a specimen.
Cultivation
Plant in loose, well-draining loamy, sandy or gravelly soils in full sun. More sun makes for optimal plant growth. Repot annually to encourage growth.
Shape
Upright columnar.
Growth
Fast
Habitat
Dry, rocky plains and shrublands.
Bark/Stem Description
Upright columns that grow in a distinct 4-veined shape. Areoles insignificant, 1 - 2 mm in diameter. Small spines, 1 -4 mm long.
Flower/Leaf Bud Description
Small round flower buds, insignificant, growing along the veins and areoles with the leaves.
Leaf Description
Small obovate-pinnate leaves grow along the columns, 2 - 3 cm long and 1 - 2 cm wide.
Flower Description
Small inflorescences, insignificant, growing between 1 - 4 mm in diameter.
Colour Description
Deep green to reddish-green succulent flesh. Dark brownish-black spines, medium green leaves and reddish-pink to white flowers.
Texture Description
Smooth, thorny.
Notable Specimens
Royal Botanical Gardens, Burlington, Ontario, Canada. Centennial Conservatory, Thunder Bay, Ontario, Canada.
Propagation
Leaf cuttings.
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