I am trying to propagate oleander from cuttings, but after a week no roots are visible. I used the newest growth on the plants and cut the leaves short. The cuttings are in water and the lowest sets of leaves were removed so that the nodes are in the water. They have been kept indoors in a spot that gets some indirect light. Should I have roots growing already? Also, is there a better way of doing this?
Put in soil with vermiculite and/or sand. Start over. Dip in rooting hormone and put in soil. 3 tall cuttings of new growth are best. It could take a year on some plants to grow roots. Be sure the soil you use is sterile so nothing in it will cause rot.