This is a method of asexual plant reproduction in which a piece of stem root or leaf is used to group new plants identical to the mother plant

"Budding" is a method of asexual plant reproduction in which a piece of stem root or leaf is used to group new plants identical to the mother plant.

Explanation:

Budding is one form of asexual reproduction involving the single parent in producing offspring. It can be found budding in yeast. This is a method of asexual reproduction that requires the creation of small cell mass as protuberances on the parental body to create new structures, called buds.

It is often used in the multiplication of a variety that can not be generated from seed like producing fruit trees, roses and many decorative varieties of trees and shrubs. It can be utilized for trees which can not be conveniently transplanted with whip grafts or cleft.