Try to root cuttings in water. I've had good results placing the container on a windowsill facing West.

Omar

Do you just set them in plain water? Or do you dip them in the rooting hormone first? And does it really matter if you make the cut at a 45 degree angle, or can you just pinch it off?

I set the cuttings in plain water, w/o using rooting hormone. However, I've heard people stating they do use rooting hormone with good results. I made sure to leave the leaves out of the water but I didn't use any particular way to cut the cuttings. Good luck!

Omar

Is this a tropical or hardy hibiscus??

The ones I've propagated are the ones whose inner part of the cutting is more dense, less spongy. I think they are tropical, even though they are hardy to zone 8.

Omar

I have rooted them in potting soil with root hormone. I place a 2 ltr plastic bottle over the plant. Cut the bottom out and leave the cap on. 4-6 weeks it has roots and I remove the cap for a while, then remove the bottle.