It depends on the plant. I have two types of Java Fern, Anacharis, Anubias and just got Microsword and Wisteria. There are so many options and they look a lot better than fake ones. Get decent lights, 2-3 watts per gallon and depending on the plant, tie it to wood/rock or plant it directly in the substrate. They do take a little extra effort than just suctioning a plastic one to the tank, and you do have to trim them and pick up any dead pieces before they decompose. Also, with the proper lights ( I wouldn't do flourescents btw) you have to make sure to keep it on maybe 8 hours a day, or you'll get algae growth. I believe there is a guide on this site with some pictures and info on some plants. Good luck