Indiantree Spurge
Euphorbia tirucalli
Euphorbia tirucalli, commonly known as Indiantree Spurge or Rubber-hedge Euphorbia, is a unique succulent native to Africa. Its striking, pencil-like stems make it a popular choice for indoor and outdoor gardens, offering a low-maintenance option for plant enthusiasts.
Everything it needs
9 essentials at a glance
Watering
Euphorbia tirucalli prefers to dry out between waterings.
Water thoroughly when the top 2-3 inches of soil are dry, typically every 2-4 weeks depending on the season. In winter, reduce watering to once a month. Signs of over-watering include yellowing leaves and a mushy stem, while under-watering may cause leaf drop and shriveling.
Light
This plant thrives in full sun, requiring at least 6-8 hours of direct sunlight daily.
Ideal placement includes south-facing windows or outdoor spots with ample sunlight. It can tolerate partial shade but may become leggy and less vibrant if not given enough light.
Soil
Euphorbia tirucalli prefers well-draining soil with a pH range of 6.0 to 7.0.
A recommended potting mix is a cactus or succulent blend, which allows for quick drainage. Ensure the pot has drainage holes to prevent water accumulation.
Humidity
This plant prefers low to average humidity levels, thriving in environments with 30-50% humidity.
To increase humidity, consider using a pebble tray with water or a humidifier. Signs of humidity stress include leaf curling and browning leaf tips.
Temperature
Euphorbia tirucalli thrives in temperatures between 65-80°F (18-27°C) and can tolerate a range of 50-90°F (10-32°C).
It is hardy in zones 10-11. Protect it from frost and extreme cold, as it is sensitive to temperatures below 50°F (10°C).
Fertilizing
Use a balanced, diluted liquid fertilizer with an NPK ratio of 10-10-10 during the growing season (spring and summer).
Fertilize every 4-6 weeks. In fall and winter, reduce or stop fertilization. Signs of nutrient deficiency include yellowing leaves and stunted growth.
Pruning
Prune Euphorbia tirucalli in late winter or early spring to maintain its shape and remove any dead or damaged stems.
Use sharp, clean scissors or pruning shears. Wear gloves to protect against the milky sap, which can irritate skin. Deadheading is not necessary for this plant.
Repotting
Repot every 2-3 years or when it becomes root-bound, typically in spring.
Choose a pot that is 1-2 inches larger in diameter. Signs it needs repotting include roots growing out of the drainage holes and stunted growth. Carefully remove the plant from its pot, trim any damaged roots, and place it in fresh soil.
Propagation
Propagation can be done through stem cuttings.
Take a healthy stem cutting of 4-6 inches, let it dry for a few days to callous, then plant it in well-draining soil. Water lightly after planting and keep it in bright, indirect light. The best time for propagation is in spring or early summer.
When it's unhappy
Yellow leaves
Why it happens
Typically caused by over-watering or insufficient light.
How to fix it
Reduce watering frequency and ensure the plant receives adequate sunlight.
Leaf drop
Why it happens
Can occur due to sudden temperature changes or under-watering.
How to fix it
Maintain consistent temperatures and check soil moisture regularly.
Leggy growth
Why it happens
Insufficient light can cause the plant to stretch towards the light source.
How to fix it
Move the plant to a brighter location to encourage compact growth.
Brown leaf tips
Why it happens
Often a sign of low humidity or over-fertilization.
How to fix it
Increase humidity levels and reduce fertilizer application.
Root rot
Why it happens
Caused by over-watering and poor drainage.
How to fix it
Ensure proper drainage and allow the soil to dry out between waterings.
Care through the year
Spring
In spring, repot if necessary and resume regular watering and fertilization as the plant begins its active growth period.
Summer
During summer, ensure the plant receives plenty of sunlight and water as needed, allowing the soil to dry out between waterings.
Fall
In fall, gradually reduce watering as the plant enters dormancy. Stop fertilizing by late fall.
Winter
In winter, water sparingly and keep the plant in a warm location, avoiding cold drafts and frost.
Toxicity & Safety
Euphorbia tirucalli is toxic to pets and humans. The milky sap can cause skin irritation and ingestion may lead to nausea, vomiting, and diarrhea. Keep away from children and pets.
Good to know
How often should I water my Euphorbia tirucalli?
Water your Euphorbia tirucalli every 2-4 weeks, allowing the top 2-3 inches of soil to dry out completely between waterings.
Why are my Euphorbia tirucalli leaves turning yellow?
Yellow leaves can indicate over-watering or insufficient light. Adjust your watering schedule and ensure the plant receives enough sunlight.
What kind of soil is best for Euphorbia tirucalli?
A well-draining soil with a pH of 6.0 to 7.0 is ideal. A cactus or succulent potting mix works well for this plant.
Can I propagate Euphorbia tirucalli from cuttings?
Yes, you can propagate Euphorbia tirucalli through stem cuttings. Allow the cuttings to callous for a few days before planting them in well-draining soil.
What temperature does Euphorbia tirucalli prefer?
Euphorbia tirucalli thrives in temperatures between 65-80°F (18-27°C) and should be protected from frost.
Is Euphorbia tirucalli toxic to pets?
Yes, Euphorbia tirucalli is toxic to pets and humans. Its milky sap can cause irritation and ingestion can lead to gastrointestinal issues.
How do I prune my Euphorbia tirucalli?
Prune your Euphorbia tirucalli in late winter or early spring using clean, sharp scissors to maintain its shape and remove any dead stems.
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