Euphorbia guentheri
Euphorbia guentheri
Guentheri
About this plant
Euphorbia guentheri is a succulent plant known for its unique, spiny stems and milky sap. It is a slow-growing plant that stores water in its tissues, making it drought-resistant. It is often grown as an ornamental plant for its interesting form and low maintenance needs. The sap can be irritating, so care should be taken when handling.
Taxonomy
- Genus
- Euphorbia
- Family
- Euphorbiaceae
- Higher classification
- Order Malpighiales
- Plant type
- Succulent
- Lifespan
- Perennial
Origin & Distribution
- Native region
- Southern Africa
- Distribution
- Native to parts of southern Africa; cultivated in dry, warm regions worldwide.
Care
- Light preference
- Full sun
- Suitable locations
- Indoor, Outdoor, Balcony, Greenhouse
- Preferred window facing
- South-facing, West-facing, East-facing
- Watering frequency
- Rare
- Watering interval
- 14–21 days
- Humidity
- Low
- Minimum
- 5 °C
- Maximum
- 35 °C
- Optimal
- 18-26 °C
- USDA hardiness zones
- 9-11
- Soil pH
- 6.0-7.5 (neutral to slightly acidic)
- Soil type
- well-draining sandy or cactus potting mix
Watering. Water only when the soil is completely dry. In winter, reduce watering significantly to prevent rot.
Fertilizing. Feed lightly during the growing season (spring and summer) with a balanced, diluted fertilizer once a month. Avoid fertilizing in winter when the plant is dormant.
Euphorbia guentheri is a hardy succulent that prefers bright sunlight and well-draining soil. It is drought-tolerant and needs watering only when the soil is completely dry. Avoid overwatering to prevent root rot. Handle with care due to its irritating sap.
Propagation
- Propagation methods
- Cuttings, Seeds
- Care difficulty
- Medium
Ornamental features
- Flowering
- Yes
- Flowering period
- spring
Distinctive spiny stems with a sculptural form; small, inconspicuous flowers; milky sap.
Toxicity & Safety
- Toxic to humans
- Mildly toxic
- Toxic to pets
- Mildly toxic
- Weed potential
- Not considered a weed
The sap is irritating to skin and eyes; keep away from children and pets. Ingestion can cause stomach upset.
Allergy information
- Allergy risk
- Low
- Allergy triggers
- Sap or latex, Skin contact
- Pollen level
- None
Euphorbia guentheri can cause skin irritation if touched due to its milky sap. People sensitive to plant sap should wear gloves when handling it. It does not produce airborne pollen that typically causes allergies.
Common problems
Overwatering can cause root rot. Sap contact may cause skin irritation. Poor drainage or low light can weaken the plant.
Uses
Grown mainly as an ornamental succulent for its unique appearance and drought tolerance.
Notes
Wear gloves when pruning or repotting to avoid sap contact. Repot every 2-3 years in fresh, well-draining soil. Protect from frost and excessive moisture.