Q: Why is my 'Rubra' turning green?
A: The intense red coloration is directly related to light exposure. If the plant does not receive enough bright, direct sunlight, the stems will revert to a more greenish color. To maintain its vibrant red-purple hue, place it in the sunniest location available—a south- or west-facing window indoors, or full sun outdoors .

Q: Is the milky sap dangerous?
A: Yes, the milky white latex sap is toxic and a severe skin and eye irritant . Always wear gloves when handling, pruning, or propagating this plant. Avoid contact with skin and especially eyes. Keep the plant out of reach of children and pets. If contact occurs, wash immediately with soap and water .

Q: How often should I water it?
A: Water deeply but infrequently, allowing the soil to dry out completely between waterings . During the active growing season (spring and summer), this may mean watering every 1-2 weeks. In winter, reduce watering to once a month or less. Overwatering is the most common cause of failure, leading to root rot .

Q: How do I prune or shape it?
A: Prune in spring or early summer using clean, sharp pruning shears. Wear gloves to protect against the sap. Cut stems at a joint or node to encourage branching. The plant will respond by producing new stems from below the cut. Allow cut ends to callous over for a few days before handling.