The Crown of Thorns (Euphorbia milii) is a popular succulent houseplant known for its resilience and colorful bracts. Here are some key features and care tips for the Crown of Thorns house plant:

1. Appearance: The Crown of Thorns is a succulent with thick, spiny stems and oval-shaped leaves. The plant gets its name from the clusters of thorns that grow along the stems. The real attraction, however, is the colorful bracts that surround the small, inconspicuous flowers. Bract colors can range from red, pink, and orange to yellow.

2. Light: Crown of Thorns plants thrive in bright, indirect light. They can tolerate some direct sunlight, but too much may cause leaf burn. They are well-suited for sunny windowsills or areas with filtered sunlight.

3. Watering: These succulents prefer to dry out between waterings. Allow the soil to dry out partially before watering again. Overwatering can lead to root rot, so it's essential to maintain a balance. During the growing season (spring and summer), water more frequently, and reduce watering in the winter.

4. Soil: Use a well-draining succulent or cactus mix for planting the Crown of Thorns. A mix that allows water to pass through quickly helps prevent overwatering issues.

5. Temperature: Crown of Thorns plants prefer warm temperatures between 65-75°F (18-24°C). They are sensitive to cold temperatures and should be protected from drafts and frost.

6. Fertilization: During the growing season, you can feed your Crown of Thorns with a balanced liquid fertilizer every 4-6 weeks. Reduce or stop fertilizing during the winter months when the plant is in a period of dormancy.

7. Pruning: Prune the plant to control its size and shape, and remove any dead or damaged growth. Be cautious when handling the plant, as the sap can be irritating to the skin and eyes. Wear gloves if needed and wash hands thoroughly after handling.

Crown of Thorns is a relatively low-maintenance plant that adds a touch of color and texture to indoor spaces. With proper care, it can thrive and produce its colorful bracts throughout the year.