Mottled spurge
Euphorbia lactea Cristata
Cristata
About this plant
Euphorbia lactea, often called mottled spurge, is a striking succulent with thick, ribbed, and often crested stems that look like coral. It has a unique, sculptural appearance and is popular as an ornamental plant. The plant produces a milky sap that can be irritating. It is often grafted onto other Euphorbia species to create interesting shapes.
Taxonomy
- Genus
- Euphorbia
- Family
- Euphorbiaceae
- Higher classification
- Order Malpighiales
- Plant type
- Succulent
- Lifespan
- Perennial
Origin & Distribution
- Native region
- India, Southeast Asia
- Distribution
- Native to tropical Asia, widely cultivated in warm regions and as a houseplant 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
- 10 °C
- Maximum
- 35 °C
- Optimal
- 18-26 °C
- USDA hardiness zones
- 10-11
- Soil pH
- 6.0-7.5 (neutral to slightly acidic)
- Soil type
- well-draining cactus or succulent mix
Watering. Water sparingly, allowing the soil to dry out completely between waterings. Reduce watering in winter when the plant is dormant.
Fertilizing. Feed with a balanced, diluted fertilizer during the growing season (spring and summer) about once a month. Avoid fertilizing in winter when the plant is dormant.
Euphorbia lactea is a fairly easy plant to care for. It prefers bright light and well-draining soil. Overwatering can cause root rot, so water sparingly and let the soil dry out between waterings. It is drought-tolerant and needs minimal maintenance.
Propagation
- Propagation methods
- Cuttings, Grafting
- Care difficulty
- Medium
Ornamental features
- Flowering
- Yes
- Flowering period
- spring
Unique crested, ribbed stems with a mottled green and white appearance; unusual coral-like form; small inconspicuous flowers.
Toxicity & Safety
- Toxic to humans
- Mildly toxic
- Toxic to pets
- Mildly toxic
- Weed potential
- Not considered a weed
The milky sap is toxic and can cause skin irritation or eye damage. Keep away from children and pets. Do not ingest.
Allergy information
- Allergy risk
- Low
- Allergy triggers
- Sap or latex, Skin contact
- Pollen level
- Low
Euphorbia lactea can cause skin irritation or allergic reactions in some people due to its milky sap. Avoid touching the sap and wash your hands if contact occurs. People with sensitive skin or latex allergies should be careful when handling this plant.
Common problems
Common problems include root rot from overwatering, sunburn if exposed to intense direct sun for too long, and occasional pest issues like mealybugs.
Uses
Primarily grown as an ornamental plant for its unusual and attractive form. Sometimes used in succulent collections and xeriscaping.
Notes
Be careful when pruning or repotting as the sap can irritate skin and eyes. Use gloves and wash hands thoroughly after handling. Repot every 2-3 years or when root-bound.