I haven't done it with a Hibiscus cut I've used the following method for Rose, Rosemary and Lavender. The Lavender and Rosemary I've also done by filling a beer stubby with water and placing the stem so it's about 50mm below the water, keep water topped up, roots eventually emerge. But Lav and R/Mary are simple, not sure if Hibiscus will work this way, probably best to use soil as per below.
Request: Starting a Hibiscus from a Cutting By Ellen Brown Cuttings are the method most commonly used by nurseries to propagate hibiscus. Some varieties tend to root more readily than others, so you might have to experiment to see what works best for yours. Here are some general guidelines: Take cuttings from new growth in the spring or summer. The cuttings should be trimmed to about the length of a pencil, leaving 2-3 leaves at the top. Cut slits in one or two of the nodes (eyes) near the bottom of the cutting (this is where the roots will emerge). Dip the nodes in a rooting hormone and place the cuttings in a large pot filled with a moist, but well-drained, growing medium like perlite. Place several cuttings in the pot, as they tend to do better when grouped together. Hibiscus cuttings prefer bottom heat and a humid environment. A water-filled tray placed under the pot is a good way to ensure that the growing medium stays moist. Just make sure the water covers the pot's drainage holes so it can wick up the moisture as necessary. Mist cuttings often and keep them in partial sun at temperatures of 20 to 30 calcium. Cutting should root in 6-8 weeks. About The Author: Ellen Brown is an environmental writer and photographer and the owner of Sustainable Media, an environmental media company that specialises in helping businesses and organisations promote eco-friendly products and services. Contact her on the web at http://www.sustainable-media.com
There is another method called 'layering'. Part of the stem is buried whist still attached to the parent plant. Sounds fiddly to me but may work better because it has the parent plant as a back up as opposed to being cut off and then having to sprout roots on it's own. Just Google: propagate hibiscus. Hope you strike one
