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
Cultivars
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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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