Introducing the Euphorbia milii ‘Yellow,’ known as the Yellow Crown of Thorns, which is a popular and eye-catching succulent that adds a splash of color to any garden or indoor space. It is known for its resilience and vibrant blooms. Since it is native to Madagascar, the Euphorbia milii, opens in a new tab species has been cultivated all over the world, especially in tropical and subtropical areas, because of its ornamental appeal and adaptability.

In addition to being called Yellow Crown of Thorns, Euphorbia milii is also known by other names such as Christ plant or Christ thorn plant. These names are derived from the legend that the crown of thorns worn by Christ at the crucifixion was made from this plant. The plant has historical significance and origins in the Middle East, where it is believed that the stems were used to make Jesus Christ's crown.

Euphorbia milii Yellow, or Crown of Thorns, displays green stems with pale yellow flowers and grows well outdoors in sandy soil.

The Yellow Euphorbia is a small, shrubby succulent with thick, spiny stems that provide it with a distinctive, architectural look.

The plant’s oval, fleshy bright green leaves with pink edges but may change to shades of yellow or reddish-brown when exposed to intense sunlight or under stressful conditions.

This color change is a natural response and adds to the plant’s dynamic visual appeal.

Cyclical leaf drop is normal, but it is messy and occurs before the plant’s resting season which is typically during winter.

The spines along the stems, which are modified branches, serve to protect the plant in its native habitat. When fully grown, this thorns plant can grow up to 3 feet tall. Its small size makes it ideal for container gardening, border plants, and rock gardens. As a slow-growing plant, it requires minimal maintenance and can reach specific heights depending on its environment.

The bright yellow flowers of the yellow crown of thorns bloom in the spring under optimal conditions. These Euphorbia milii flowers are actually modified leaves called bracts, which surround the plant’s true, inconspicuous flowers. The showy braces give the plant its vibrant and long-lasting color, making it a favorite for those looking to add a pop of color to their gardens.

Euphorbia milii is typically propagated through stem cuttings. To propagate, cut a healthy stem from the parent plant and allow it to dry for a few days to prevent the sap from causing rot. Once the cut end has callused over, it can be planted in a well-drained soil. This method is relatively simple and results in a high success rate, making it easy to expand your collection or share with friends.

Watering Needs

The Euphorbia milii is extremely drought-tolerant and prefers its soil to dry out between watering sessions. Overwatering can be detrimental, leading to root rot, so it’s crucial to allow the soil to partially dry before watering again. Common plant diseases such as root rot and leaf spotting can occur if proper care is not maintained. To prevent these issues, ensure the soil is well-drained and monitor the plant regularly for any signs of disease.

In the spring and summer, during the active growing season, it’s recommended to water Euphorbia milii yellow around once a week to support its growth and blooming cycle.

In the dormant winter months, it’s essential to adjust the watering frequency to prevent issues related to excess moisture. During this period, reduce watering to every two to three weeks to mimic the plant’s natural growth cycle and avoid waterlogged conditions.

When watering, focus on watering the soil directly around the plant’s roots while avoiding wetting the foliage to prevent potential leaf rot. Using pots with drainage holes can further aid in maintaining the plant’s health by preventing waterlogging and ensuring proper aeration for the roots. Following these watering guidelines diligently will help your Euphorbia succulent thrive and showcase its vibrant blooms beautifully.

Light Requirements

When grown indoors, this Euphorbia milii thrives in bright, indirect light for at least 4-6 hours daily. It is best to place it close to a window where it will get plenty of bright light without being directly exposed to strong rays. Euphorbia milii yellow can adapt to lower light conditions but may not bloom as profusely without adequate light. Rotating the plant occasionally can ensure even growth on all sides as it reaches the light source.

For outdoor cultivation, yellow crown of thorns enjoys full sun to partial shade. In outdoor settings, it can benefit from direct sunlight for 6-8 hours a day, especially in the morning or late afternoon when the sun is less intense. Ensure the plant is shielded from the harsh midday sun, especially in hotter climates, to prevent sunburn on the leaves. Providing the right balance of sunlight outdoors can promote healthy growth and vibrant blooms on your yellow crown of thorns.

Optimal Soil & Fertilizer Needs

When it comes to soil, this Euphorbia plant thrives in a well-drained soil mix that allows excess water to flow out easily. A succulent mix works well for Euphorbia milii, providing the necessary aeration and drainage to prevent waterlogging, which can lead to root rot. Planet Desert specializes in succulents and has specialized succulent potting soil, opens in a new tab that includes an organic substrate with mycorrhizae to help with the growth of a healthy root system to help your succulents thrive.

In terms of fertilizer, Euphorbia milii yellow benefits from a water-soluble, balanced fertilizer (5-10-5) formulated for succulents. During the active growing season in spring, you can fertilize the plant about once a year to support healthy growth and blooming. It's essential to dilute the fertilizer to half or quarter strength to prevent over-fertilization, which can harm the plant. During the dormant winter months, you can reduce or stop fertilizing to align with the plant's natural growth cycle and prevent excessive nutrient buildup in the soil.

Hardiness Zones & More

When grown indoors, your Euphorbia milii crown of thorns thrives in warm temperatures between 65°F to 75°F. It is essential to avoid extreme temperature fluctuations and drafts, as this can stress the plant. Maintaining a consistent indoor temperature and providing adequate airflow can help it thrive in an indoor setting. This tough plant can withstand a range of conditions, including temperature extremes.

For outdoor cultivation, it is generally suitable for USDA hardiness zones 9 to 11. These zones typically have milder winters and warmer climates, which are optimal for the plant’s growth. In these zones, the plant can withstand temperatures down to 25°F but may require protection during colder periods. It is crucial to provide adequate shelter or bring the plant indoors during frost or freezing conditions to prevent damage to the plant.

The crown of thorns plant prefers humidity levels between 40-60% to thrive, making it important to mist the plant regularly or place a humidifier nearby. It is important to avoid overwatering, as this can lead to root rot and other issues with your thorn plants’ health.

Final Thoughts

Overall, the Euphorbia milii ‘Yellow’ is a resilient and visually striking succulent, known for its bright yellow bracts and thorny stems. Native to Madagascar, it thrives in a well-drained soil mix and requires minimal care, making it perfect for both indoor and outdoor gardens. The plant’s leaves may change color under intense sunlight, adding to its dynamic appeal. New stem growth, characterized by its thick, spiny structure, supports the plant's overall health and blooming capacity.

Reaching up to 3 feet in height, it blooms year-round with proper light and occasional watering. With easy propagation through stem cuttings, the Yellow Crown of Thorns is an ideal choice for gardeners seeking a low-maintenance yet vibrant addition to their plant collection. Don’t miss out on this opportunity to add something truly exceptional to your garden. Order your very own Euphorbia milii for sale today!

Types of Euphorbia Milii