Pencil cactus (Euphorbia tirucalli)
Care, watering, light and tips for Pencil cactus on Floravia.
Quick facts
- Family: Euphorbiaceae
- Difficulty: Easy to care for
- Watering: every 14 days
- Light: Full sun
- Temperature: 10–38 °C
- Toxicity: Toxic to pets
About Pencil cactus
Euphorbia tirucalli, commonly known as Pencil Cactus or Tohifafa hazo, is a columnar succulent shrub native to Africa, featuring intensely green, cylindrical, branched stems that lack prominent leaves. Its unique appearance, resembling corals or leafless shrubs, makes it ideal for xeriscape gardens, rockeries, or as a large potted indoor plant, adding an architectural and modern touch. It is a very hardy and low-maintenance species, perfect for hot and dry climates.
Native range
Tropical and subtropical Africa, including Madagascar
Care tips
It requires abundant direct sunlight to thrive, although it tolerates some partial shade in very hot climates. Watering should be moderate; allow the substrate to dry out completely between waterings to prevent waterlogging, which is its main enemy. Use a well-draining substrate, specifically for cacti and succulents, to ensure good drainage. A common mistake is overwatering, which can lead to root rot; it is better to underwater than to overwater.
How to save a dying Pencil cactus
- Warning signs
- Soft, shriveled or drooping stems; discoloration (yellow/brown), falling leaves (if any). Soft, dark roots.
- First aid
- Remove plant, inspect roots. Cut off rotten parts, air dry for a day. Repot in dry, well-draining substrate.
- What kills it
- Overwatering and poor drainage. Does not tolerate waterlogging or extreme cold. Humidity rots its roots.
- Can it be saved?
- Yes, if you act fast and rot isn't too advanced. Propagate healthy cuttings as a backup plan.