Witches' broom is a term that describes a deformity found in plants that results in an excessive cluster of branches growing from a single point, resembling a broomstick. This growth is usually caused by the activity of pathogens such as fungi or viruses, and it can lead to stunted growth in the plant. There are several other names for this condition, including fasciation, broomstick disease, and bunchy top. In some cultures, witches' broom is associated with superstition and folklore, and it is believed to be a sign of supernatural activity. However, in the context of plant pathology, it is a common phenomenon that can affect a range of plant species.