The process of creating a new plant by joining one plant part with another plant part is called grafting. The plant part to which it is attached is called a scion. The plant to which the scion is attached is called stock. The stock is planted in a tub. Later the desired sion is attached to the stock. Stock may be low quality plants. But Sion has to be of high quality. Commonly grafted flowers and fruit trees. Plants such as cool, mango, yam, litchi, guava, chapa, magnolia etc. are grafted.