Vegetative Propagation : Definition, Diagram, Types and its Methods Vegetative propagation is a plant reproduction method where new plants grow from stems, leaves, or roots of existing plants. Vegetative propagation , its methods and process is briefly discussed here. Vegetative propagation is a type of asexual reproduction in plants where new plants grow from vegetative parts like roots, stems, or leaves. Vegetative propagation is defined as a type of asexual reproduction in which new plants are formed from vegetative parts of the parent plant. Vegetative propagation is a type of asexual reproduction in which a new plant grows from the vegetative part of the parent plant instead of the reproductive part i.e. the flower.