Chameleon Plant, African Milk Bush, African Poinsettia, Synadenium Grantii ‘Rubra’. Hardy to temperature 32F. Euphorbia umbellata is a rather succulent, evergreen shrub or a small bushy tree that usually grows up to 5 metres tall, occasionally to 10 metres. The plant is harvested from the wild for local medicinal use. It is sometimes cultivated as a greenhouse plant in temperate regions or as a garden plant in Kenya. A xerophytic plant that thrives on rocky hills with dry open woodland in the east African uplands, at elevations from 900- 2,100 metres, with an annual rainfall of 600 - 900mm. Excessive rainfall & cold conditions cause the stem to rot. in cultivation Euphorbia umbellata is moderately slow-growing, growing faster in warm tropical conditions with abundant rainfall. Under garden conditions at high altitudes, it can reach 3 metres in height in 5 years Chameleon Plant, African Milk Bush, Poinsettia, Synadenium Grantii