The Pencil Cactus, scientifically known as Euphorbia tirucalli, is a striking succulent shrub with slender, cylindrical green stems that resemble pencils – hence the name. When grown in bright sunlight, the tips can develop orange, red, or pinkish hues, giving it the nickname “Firesticks” or “Sticks on Fire.”
This plant is native to Africa and India and is widely loved for its unique architectural form, making it a popular choice for modern homes, offices, and landscapes. It is drought-tolerant, hardy, and low-maintenance, suitable for both beginners and collectors.
⚠️ Note: The Pencil Cactus contains a toxic milky sap (latex) that can irritate skin and eyes, so it should be handled with care and kept away from children and pets.
🌿 Care Instructions for Pencil Cactus (Euphorbia tirucalli)
Light: Thrives in bright, direct sunlight. Can tolerate partial shade but develops the best color in full sun.
Watering: Very drought-tolerant. Water sparingly – allow the soil to dry out completely between waterings. In winter, reduce watering further. Overwatering can cause root rot.
Soil: Requires well-draining soil – cactus or succulent mix is ideal.
Temperature: Prefers 20–32°C. Protect from frost (not frost-tolerant).
Humidity: Tolerates low humidity, perfect for indoor and dry climates.
Fertilizer: Feed once a month in spring and summer with a cactus fertilizer. No fertilizer needed in winter.
Pruning: Can be trimmed to maintain shape. Always wear gloves and eye protection when pruning due to toxic sap.
Repotting: Repot every 2–3 years or when roots outgrow the container.
✨ Key Benefits of Pencil Cactus
Unique architectural, modern look
Low-maintenance and drought-tolerant
Can grow large outdoors or remain compact in pots indoors
Excellent for bright homes, offices, and landscapes