How to Propagate Euphorbia echinus
Euphorbia echinus can be propagated from stem cuttings or seeds.
To grow Euphorbia echinus from cuttings, follow the directions in this post to learn how to handle a cactus safely.
To remove a stem for propagation, you will need nitrile dipped gloves, silicone tongs, and a sharp knife.
Using the tongs, gently pull one of the cylindrical stems away from the main cluster. If you are not able to break it off without pulling up the rest of the plant, use the knife to cut through the stem.
Allow the end of the stem to callous over for several days before placing in well-draining soil.
Seeds can be collected from the fruit of a mature Euphorbia echinus. Sow your seeds in a well-draining soil. You can grow Euphorbia seeds outdoors if you live in an zone above 9a. If you live in a cooler area, you can begin sowing indoors under a grow light or on a seed mat.