Euphorbia cooperi
Flowers: Yellowish green
Blooming season: Spring to Summer.
Cultivation and Propagation: It’s an easy species to grow that is suited for any well-drained soil in full sun. But young plants are happy growing indoors. Give the plant an airy growing medium. Water regularly during the active growing season from March to September. No water should ever be allowed to stand around the roots. Keep almost completely dry in winter. It is a moderately fast grower and will quickly become large landscape masterpieces in just 5-10 years. It is a long-lived plant and once established, it will be content in its position and with its soil for years. It can tolerate moderate shade, and a plant that has been growing in shade should be slowly hardened off before placing it in full sun as the plant will be severely scorched if moved too suddenly from shade into sun. Like quite small pots, repot in very later winter, early spring. Frost tender, frost-free zones only.
Some of the information in this description has been found at desert-tropicals.com, llifle.com and cactus-art.biz
