Witch's broom or witches' broom is a deformity in a woody plant, typically a tree, where the natural structure of the plant is changed. A dense mass of shoots grows from a single point, with the resulting structure resembling a broom or a bird's nest. It is sometimes caused by pathogens. · Witches' broom is a symptom of stress in woody plants, caused by pests, diseases, environmental factors or genetic mutations. It appears as a dense cluster of twigs or branches, resembling a broom, and does not harm the tree or shrub. · Witches’ broomdisease describes an unusual plant growth where a dense cluster of shoots sprouts from a single point, resembling a broom. This abnormality affects various woody and herbaceous plants, creating a distinct departure from their normal growth. View allWitch's broom or witches' broom is a deformity in a woody plant, typically a tree, where the natural structure of the plant is changed. A dense mass of shoots grows from a single point, with the resulting structure resembling a broom or a bird's nest. It is sometimes caused by pathogens. · The cacao industry in Brazil was decimated when Witches’ BroomDisease (WBD), caused by the fungus Moniliophthora perniciosa, decimated cacao trees (Theobroma cacao) in the 1990s. Witches' broom is a condition that causes abnormal growth of shoots or balls in trees. It can be caused by fungi, mites, phytoplasmas, dwarf mistletoe, or genetic mutations. Learn how to identify and control witches' broom in different tree species. Witches’-broom, symptom of plant disease that occurs as an abnormal brushlike cluster of dwarfed weak shoots arising at or near the same point; twigs and branches of woody plants may die back. · Discover the causes, symptoms, and management strategies for witchesbroomdisease in plants. Learn how to prevent and control this fungal infection affecting plant growth. · Witches’ broomdisease describes an unusual plant growth where a dense cluster of shoots sprouts from a single point, resembling a broom. This abnormality affects various woody and herbaceous plants, creating a distinct departure from their normal growth. · The cacao industry in Brazil was decimated when Witches’ BroomDisease (WBD), caused by the fungus Moniliophthora perniciosa, decimated cacao trees (Theobroma cacao) in the 1990s. Witches' broom is a condition that causes abnormal growth of shoots or balls in trees. It can be caused by fungi, mites, phytoplasmas, dwarf mistletoe, or genetic mutations. Learn how to identify and control witches' broom in different tree species. Witches’-broom, symptom of plant disease that occurs as an abnormal brushlike cluster of dwarfed weak shoots arising at or near the same point; twigs and branches of woody plants may die back. · Discover the causes, symptoms, and management strategies for witchesbroomdisease in plants. Learn how to prevent and control this fungal infection affecting plant growth.