Water your devil's backbone plant well a day prior to removing the plantlets. The plantlets grow on the edges of each leaf.
Prepare the rooting medium by filling a small, 3-inch pot with potting compost. Water to moisten.
Use clean tweezers to lift off a few plantlets from each leaf. Take care not to ruin the overall appearance of the leaf in the process. Do not take too many plantlets from a single leaf, and avoid damaging the plantlets as you handle them.
Lay the plantlets on the surface of the compost, leaving a couple of inches between each to allow room for growth.
Water enough to keep the compost moist during the rooting process. Do not overwater. Place in a warm bright area, but out of direct sunlight. It will take a few weeks for the plantlets to produce roots.
Transfer rooted plantlets to individual small containers filled with potting soil. Let plants get well established if you wish to transplant to a permanent spot in the garden.