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Witches broom treatment6/22/2023 ![]() Peach trees and black locusts can be affected by viruses that can result in witches’ brooms. Fungal infections can also affect cherry trees and blackberry bushes, forming broom growth. For instance, pine brooms are commonly caused by rust fungus. Generally, the type of tree/shrub is a good indicator of its causal agent. Environmental factors may also be to blame, and some are caused by genetic mutations. In addition, parasitic plants like mistletoe, which cause stress to host trees, can lead to the formation of witches’ brooms. This includes anything from mites, aphids, and nematodes to fungi, viruses, and bacterial organisms (phytoplasmas). They’re actually caused by stress that is brought on by pests or diseases. Witches’ broom disease is not caused by witches, however. As brooms were once fashioned together from bundles of twigs and since witches were presumed to be responsible for anything unusual, these abnormalities became known as witches’ brooms. The stress results in a deformed mass of twigs and branches, which appear broom-like in appearance. This includes deciduous trees and shrubs as well as conifers and evergreen varieties. ![]() ![]() Witches’ broom is a symptom of stress found in woody plants, mainly trees, but it also affects shrubs as well. What are these and do they cause any harm? Keep reading to find out more about the signs and symptoms of witches’ broom disease. ![]() Ever seen those odd-looking, broom-like distortions in a tree? Perhaps it’s one of yours or in a tree nearby. ![]()
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