How to propagate Euphorbia milii

Use a healthy 3 to 6 inch terminal cutting from Euphorbia milii. Let its cut end dry for 2 to 3 days before setting it in barely damp, well-drained mix.

Plant coveredEuphorbia miliiCrown of thorns · indoor and outdoor

Choose a viable cutting, division, offset or seed

What plant material to use

Use a healthy 3 to 6 inch terminal section or pruning as Euphorbia milii stem-cutting material. UW describes this as an easy propagation route.

Follow the method for this plant

How to propagate this plant

  1. The supported home method is a stem or terminal cutting, rooted in a well-drained planting mix after the cut surface has dried. The procedure does not promise water propagation.
  2. Root the cutting in a well-drained mix such as sharp sand, perlite, and peat. Keep it just barely damp and warm. UW reports rooting in about 5 to 8 weeks under warm conditions.
  3. After taking the terminal section, dip the cut end in cold water or powdered horticultural charcoal to reduce milky sap flow. Let it dry for 2 to 3 days, then place it in the well-drained mix.

Check visible progress before moving the plant

Signs of roots or failure

Roots may form in roughly 5 to 8 weeks under warm conditions. No reliable sign above the medium shows when the cutting is ready to move on.

UW warns that a cutting kept too dry will not root, while one kept too wet may rot. These are moisture-related failure paths, not proof of a particular pathogen.

Transfer the plant after roots have formed

Aftercare and hygiene

Sources