A clone is a cut part of a living marijuana plant, such as a branch, which grows, becoming its own plant. A clone contains the same genetic makeup as the plant from which it was taken, known as the mother plant.
There are several reasons why growers use clones. One prominent reason is that clones are an excellent way to start a marijuana plant, not dealing with seeds. Growing weed from a clone saves time because you skip seed germination, shortening the growing process by a month.