witches broom is a tree deformity, dense mass of shoots grows from a single point, with the resulting structure resembling a broom

witch 039 broom tree deformity disease grow branch park nature woody wood woodland parkland plant flora pathogen twig mutation horticulture deformation landscape day spring season deciduous treetop green lush foliage people phytoplasma condition natural infection leaf witches dense mass shoots grows single point structure resembling bird's nest selective focus