What is the term for the abnormal growth of new shoots originating from the same point on a plant?

The term "witches' broom" refers to the abnormal growth of new shoots that emerge from a single point on a plant, creating a dense cluster or a broom-like appearance. This phenomenon often occurs as a response to various stress factors, disease, or pests affecting the plant. It is commonly associated with disorganized growth, where the normal growth patterns are disrupted, leading to an excessive number of shoots that may inhibit the healthy development of the plant.

This concept is particularly relevant in the study of plant pathology and horticulture, as understanding witches' broom can help identify underlying issues that may require management or control. In contrast, other terms like crown gall refer to specific types of tumor-like growths caused by bacterial infections, while root rot describes damage to roots caused by fungal pathogens leading to plant decline. Dieback, on the other hand, is related to the progressive death of shoots or limbs, often starting from the tip of the branch. Recognizing the correct terminology is essential for effective plant care and treatment strategies.