How to Propagate Crown of Thorns
Euphorbia milii
| Methods | Stem cutting |
| Difficulty | Intermediate |
| Best season | Spring–summer |
| Time to root | 4–6 weeks |
| Group | Succulent |
Crown of thorns roots from stem cuttings, but the process requires extra care: it has both sharp thorns and irritating milky latex sap. Wear gloves, blot the sap fully before planting, and let the cutting dry longer than typical succulents (a week) since the thick sap slows callusing.
Stem cutting
- Wearing gloves, cut a 4–5 inch stem section.
- Blot the bleeding sap with a cloth until it stops.
- Let it dry and callus for about a week.
- Insert into dry, well-draining succulent mix.
- Water sparingly until established.
When to propagate
Spring and summer.
Common problems
Cutting rotted. Didn’t callus long enough given the thick sap — extend drying time.
Questions people ask
Is the sap dangerous? Yes, it’s a significant skin and eye irritant and toxic if eaten — always wear gloves and wash hands thoroughly after handling.
Related
Succulents & cacti hub · Similar plants: Pencil Cactus, African Milk Tree