Some plants will root in water with cuttings. Corn plant does well with this method. Some others will root by just moist dirt. If u find your cuttings are rotting, it may be a plant that has to air lei or come from seed in order to propitate. You do this by wraping woody stem in damp spagham moss and wrapping in suran wrap. Make it kind of loose, don't swish it, you want like a pillow effect, then tape both ends tight. This will cause roots to grow inside pillow, usually takes about 6 months, depending on plant. If u see condensation griwing inside bubble, u did it right. You can google plant name and see if it can grow from cuttings.