Euphorbia Geroldii (Thornless Crown of Thorns)

Size: Single plant without flower | 2.5″ Pot included

Watering Needs

The thornless crown of thorns has moderate watering needs. It is important to allow the soil to dry out between waterings to prevent overwatering, which can lead to root rot. A good rule of thumb is to water this crown of thorns plant when the top inch of soil feels dry to the touch.  

In the spring and summer, during the growing season, it is best to thoroughly soak the soil and let the excess water drain out. Avoid leaving this succulent plant sitting in standing water, as this can also cause root rot. During the winter months or when the plant is in a dormant phase, it may require less frequent watering. 

Remember, it’s always better to underwater than to overwater succulents like Euphorbia geroldii. Observing the crown of Thorns’ plant’s response and adjusting watering accordingly is key to maintaining its health and preventing any water-related issues. 

Light Requirement 

When growing indoors, the Thornless Crown of Thorns, Euphorbia geroldii, thrives in bright, direct sunlight. It enjoys being placed in a location where it can receive six hours of bright light each day. A sunny windowsill or a spot near a window with a sheer curtain can be ideal for this crown of thorns. 

If you find that your thornless crown of thorns is not receiving enough light, you can supplement its light requirements with artificial grow lights. LED grow lights are a popular choice as they provide the necessary light spectrum for this flowering spurge growth without generating excessive heat. 

For outdoor cultivation, the Euphorbia geroldii enjoys sunlight, it is important to protect it from intense afternoon direct sunlight, especially during the hottest parts of the day. Too much direct sunlight over 6 hours of the day can scorch the leaves and cause damage to the crown of thorns plant. If you notice the leaves turning yellow or brown, it may be a sign that it is receiving too much direct sunlight. 

Optimal Soil & Fertilizer Needs

For the Thornless Crown of Thorns, well-draining soil is essential. A mix of cactus or succulent soil combined with perlite or coarse sand works well. This type of soil allows excess water to drain away, preventing the roots from sitting in water and potentially rotting. Instead, make or buy a well-draining potting mix, or ideally, use our specialized succulent potting mix that contains 5 natural substrates and mycorrhizae to promote the development of a strong root system that helps your succulent to thrive.  

When it comes to fertilizing, Euphorbia geroldii doesn’t have high nutrient requirements. A balanced fertilizer of NPK (5-10-5) for succulents can be used. During the active growing season, which is typically spring, you can fertilize once a year. However, it’s important to avoid over-fertilizing, as this can lead to salt build-up and damage to the crown of the Thorns plant. 

Hardiness Zone & More 

When growing indoors, your thornless crown of thorns plant can tolerate temperatures between 60-85°F. It’s important to protect the plant from frost and cold drafts, as they can damage or kill the plant. 

For outdoor cultivation, the Euphorbia geroldii prefers warm conditions and is generally suitable for USDA hardiness zones 9-11, where temperatures typically stay above freezing. 

As for humidity, this crown of thorns’ is adaptable to a range of humidity levels. It can tolerate both dry and moderately humid environments. However, it’s generally best to provide average indoor humidity levels, around 40-60%. Remember, these are general guidelines, and it’s always a good idea to observe how your specific plant responds to its environment and make adjustments accordingly.

Final Thoughts

Overall, the Euphorbia geroldii (Thornless crown of thorns) is a unique and low-maintenance succulent plant that can thrive in various environments. Its thornless nature, vibrant flowers, and attractive foliage make it a popular choice among succulent enthusiasts. Don’t miss out on this opportunity to add something truly exceptional to your garden. Order your very own thornless crown of thorns for sale today!