Crown of thorns (Euphorbia milii)
Care, watering, light and tips for Crown of thorns on Floravia.
Quick facts
- Family: Euphorbiaceae
- Difficulty: Easy to care for
- Watering: every 10 days
- Light: Full sun
- Temperature: 10–38 °C
- Toxicity: Toxic to pets
About Crown of thorns
Euphorbia milii, commonly known as Crown of Thorns, is a spiny succulent shrub native to Madagascar. It stands out for its woody stems armed with sharp thorns and its small, often brightly colored flowers (red, pink, yellow, white) surrounded by attractive bracts. This plant is ideal for rock gardens, pots on sunny balconies, or as an indoor plant in very bright locations.
Native range
Madagascar
Care tips
It requires full sun or very bright light to bloom profusely; lack of light will reduce flowering. Watering should be moderate, allowing the substrate to dry out completely between waterings, and reduced in winter. Use a well-draining substrate, preferably for cacti and succulents. A common mistake is overwatering, which can lead to root rot.
How to save a dying Crown of thorns
- Warning signs
- Yellow leaves dropping, soft/black stems, no flowering, stunted growth.
- First aid
- Check drainage and soil. If waterlogged, remove plant, trim rotten roots, and repot in dry, well-draining soil. If dry, water gradually.
- What kills it
- Overwatering (especially in winter) and lack of light. It doesn't tolerate cold or frost.
- Can it be saved?
- Yes, if you act quickly. Remove soft/black parts and ensure good drainage and plenty of sunlight.