Plant library / Succulents & cacti
Crown of Thorns
Euphorbia milii
Toxicity unconfirmed
Flowers for most of the year given enough sun, and asks for very little else. ⚠️ Handle it with gloves: like all euphorbias it bleeds a milky latex when cut or broken that irritates skin and eyes badly — wash it off at once and keep it away from your face.
Toxicity
Unconfirmed
No pet-poison database gives a verdict for cats or dogs. Treat it as unknown around pets.
Unconfirmed
No pet-poison database gives a verdict for cats or dogs. Treat it as unknown around pets.
Caution
No pet-poison database gives a verdict for cats or dogs. Treat it as unknown around pets.
Pet-safety information is a general guide from the ASPCA's toxic-plant database and covers cats and dogs only. "If eaten" summarises the symptoms ASPCA lists for that plant; how an animal actually reacts depends on how much it ate and on the animal. It isn't exhaustive, isn't veterinary advice, and individual animals vary — never rely on it as the sole basis for a decision about your pet. If you think your pet has eaten a harmful plant, contact a vet immediately.
Care
- WaterEvery 10–14 days
- LightDirect sun
- HumidityLow humidity
- Temperature15–29 °C
The same interval the Sabz app schedules reminders from. In autumn and winter the app stretches it; see houseplants in autumn.
Common problems
- No flowers — almost always too little direct sun
- Leaves dropping in winter — normal; it sheds when cool and dry — Dropping leaves →
- Soft, blackening stem at soil level — overwatered, especially in winter — Overwatering →
Similar plants
- Pencil Cactus toxicEuphorbia tirucalli
- Desert Rose toxicAdenium obesum
- Living Stones safeLithops
- Fairy Elephant's Feet safeFrithia pulchra
In the app
Add a crown of thorns to Sabz and the watering interval above becomes a reminder, the toxicity verdict sits on the plant's own page, and when a leaf turns, the Check-up reads what you have actually logged to say why.
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