The way in which plants reproduce with vegetative organs such as roots, stems and leaves is called vegetative reproduction. Nutritional reproduction includes grafting, cutting, layering and so on. Grafting refers to connecting the buds or branches of one plant to another plant, so that the combined two parts grow into a complete plant. Cutting generally refers to cutting off the stems of plants, inserting them into the soil after treatment, and then each branch can take root and sprout and grow new ones.

So, the answer is: grafting; Cutting; Layers.