How to Propagate Crown of Thorns?

The Crown of Thorns (Euphorbia milii) plant is a striking and resilient succulent known for its beautiful flowers and distinctive appearance. Whether you’re eager to create new specimens for your garden or share this enchanting plant with friends and family, propagation is the way to go. In this step-by-step guide, we will explore the art of propagating the Crown of Thorns, using both stem cuttings and seeds. With the right techniques and a bit of patience, you can multiply the beauty of this unique plant in your own gardening endeavors.

Gathering Materials

Before you dive into the propagation process, it’s essential to gather the necessary materials. To successfully propagate the Crown of Thorns, you’ll need pruning shears, a clean knife or scissors, rooting hormone (optional), pots or containers, and a well-draining potting mix. These tools and supplies will ensure you’re well-prepared for the propagation journey.

Preparing the Parent Plant

To begin the propagation process, selecting a healthy and mature Crown of Thorns plant is crucial. You want to ensure that the parent plant is free from diseases and thriving. Once you’ve chosen your parent plant, you’ll need to prepare it for the propagation process. This involves identifying and selecting suitable stems for cuttings. These stems will serve as the foundation for creating new plants through either stem cuttings or seeds, the two primary propagation methods for the Crown of Thorns. Proper preparation ensures that you start with the best possible materials for successful propagation.

Propagating with Stem Cuttings

Propagating the Crown of Thorns with stem cuttings is a popular and reliable method. Here’s how to do it:

  • Taking Stem Cuttings: Begin by selecting healthy stems from the parent plant. Cut these stems to the desired length, typically around 6 to 12 inches (15 to 30 cm). Make clean, sharp cuts just below a leaf node. This is where roots will eventually emerge.
  • Preparing the Cuttings: To prevent rot, let the cuttings air dry for a day or two, allowing a callus to form at the cut end. While using rooting hormone is optional, it can encourage faster root development. Dip the cut end of each cutting in rooting hormone before planting.
  • Planting the Cuttings: Fill pots or containers with a well-draining potting mix. Insert the prepared cuttings about 2 inches (5 cm) deep into the soil, leaving one or two leaf nodes above the surface. Plant multiple cuttings in the same pot, if desired.
  • Providing Adequate Care: Place the pots in a bright, indirect light location. Keep the soil slightly moist, but avoid overwatering, which can lead to rot. Roots should start to develop within a few weeks, and new growth will appear as the cuttings take root.
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Propagating with Seeds

Another method to propagate the Crown of Thorns is by using seeds:

  • Collecting Seeds: Gather seeds from mature Crown of Thorns plants. Once the plant has finished flowering, seed pods will develop. Wait until the pods turn brown and begin to split open to collect the seeds.
  • Preparing and Sowing Seeds: Fill pots or containers with a suitable potting mix. Sprinkle the collected seeds evenly on the soil surface. Lightly press the seeds into the soil but avoid burying them too deeply.
  • Maintaining Proper Conditions: To encourage germination, maintain consistent moisture and warmth. Cover the pots with plastic wrap or a transparent lid to create a greenhouse effect. Place the pots in a warm area, maintaining a temperature of around 70-75°F (21-24°C). Germination typically occurs within a few weeks to a few months, depending on the conditions.
  • Transplanting: Once the seedlings have grown large enough to handle, typically when they have several true leaves, you can transplant them into individual pots or your desired garden location. Gradually acclimate them to the outside environment if needed.

By following these steps for stem cuttings and seeds, you can successfully propagate the Crown of Thorns and expand your collection of these charming and resilient plants. Whether you choose one or both of these methods, you’ll be able to enjoy the beauty of this unique succulent in multiple locations in your garden or share it with fellow plant enthusiasts.

Caring for Propagated Plants

Proper care of your propagated Crown of Thorns plants is essential to ensure their growth and well-being. Here are the key steps to follow:

  • Watering: Keep the soil slightly moist, but avoid overwatering, which can lead to root rot. Water when the top inch of soil feels dry. Ensure that the pots have drainage holes to prevent waterlogging.
  • Light: Place your propagated plants in a location with bright, indirect light. These plants thrive in bright conditions but should be protected from direct sunlight, which can scorch their leaves.
  • Temperature: Maintain a warm environment for your Crown of Thorns, as they prefer temperatures between 70-80°F (21-27°C). Protect them from cold drafts and frost.
  • Fertilizing: During the growing season (spring to early autumn), feed your plants with a balanced liquid fertilizer every 4-6 weeks. Reduce or cease fertilization during the dormant winter period.
  • Repotting: As your propagated plants grow, you may need to repot them into larger containers to accommodate their increasing size and root system. Repotting is usually necessary every 2-3 years.
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Troubleshooting Common Issues

During the propagation and care of Crown of Thorns plants, you may encounter some common issues. Here’s how to address them:

  • Root Rot: If you notice signs of root rot (wilting, yellowing leaves, or a foul odor), it’s essential to act quickly. Remove the affected plant from the soil, trim away rotted parts, and repot it in fresh, well-draining soil.
  • Pests: Keep an eye out for common indoor plant pests like aphids, mealybugs, and spider mites. These can be controlled with insecticidal soap or neem oil.
  • Yellowing Leaves: Yellowing leaves may indicate overwatering, insufficient light, or poor drainage. Adjust your care routine accordingly.
  • Lack of Growth: If your propagated plants aren’t growing, check for proper light, temperature, and watering. They may be dormant, so patience is key.


Propagating the Crown of Thorns is a rewarding horticultural journey that allows you to expand your plant collection and share the beauty of this unique succulent with others. Whether you choose to propagate through stem cuttings or seeds, these remarkable plants will brighten your living space and garden with their vibrant blossoms and striking appearance.

With a little patience and the right care, your propagated Crown of Thorns will flourish, providing years of enjoyment. The unique charm and resilience of this plant make it a delightful addition to any garden or indoor space. So, start your propagation adventure and experience the joy of nurturing these enchanting succulents from their earliest stages of growth.