Euphorbia aeruginosa, native to South Africa, forms branching 4-sided aqua pencil-like stems with coppery spines extending from dark vertical bands along the margins of the stems. Will form clumps to 10" wide and approximately 7" in height. Profuse lemon yellow flowers in February. Plant in a porous soil with adequate drainage. Prefers bright to filtered light with ample airflow. Responds well to warmth, with its active growth period in the late spring and summer months. Water thoroughly when soil is dry to the touch. Less water during winter resting period. Protect from frost. All Euphorbias contain a white sap that can be irritating to eyes and mucous membranes. If contact is made with this white sap, take care to not touch face or eyes before washing hands with soap and water. The photo is of a mature 8" potted plant flowering late January.