The plumeria cutting generally starts root development within four to six weeks. Coarse sand can be used instead of potting mix. Another method is to dip the bottom 2 inches of a cured cutting into a rooting hormone and put it into a sandwich baggie filled with moist peat moss.Click to see full answer. Correspondingly, how do you root a plumeria cutting?Dip the cut end of your cuttings in a rooting hormone and sink them about halfway down into the potting mixture. You may need to tie the cuttings to stakes for support. Water your cuttings as soon as you plant them, then let them dry out for several weeks. Watering them too much at this stage can cause them to rot.Beside above, how do you grow plumeria? Often grown in the garden as an ornamental shrub or small tree, plumeria plants need to be grown in well-draining soil that is slightly acidic. They also need at least six hours of full sun. While the plants are fairly tolerant of both salt and windy conditions, they’re not tolerant of cold and must be protected. Furthermore, how long does it take for Plumeria cuttings to root? 4-8 weeks Are coffee grounds good for Plumeria?Coffee grounds are said to be acidifying, and Plumeria prefer a soil on the more acidic side, so that might be why you’ve been told that. Organic, fresh, coffee grounds do have a small nitrogen content too.