That scar is an artifact of a process called grafting, or fusing two separate pieces of wood into a new tree. From citrus to ...

The vibrant top is referred to as a scion, and the base of the plant is the rootstock. Although there are several types of grafted cacti, the moon cactus (Gymnocalycium mihanovichii) is one of the ...

Eventually, the callus tissue forms a bridge between the circulatory systems of the stock and the scion that allows them to heal together. At this point, the roots of the stock can provide water ...