The pencil cactus plant is in the Euphorbia family of succulents. Another common name for the plant is Milkbush due to the cloudy sap it releases when injured. Be cautious when caring for a pencil cactus; the sap is toxic and may cause problems in some people. The pencil cactus needs high levels of light and moderately low moisture. It is an excellent houseplant and provides an interesting silhouette.
- 1 cm