"Woody weeds" refers to plants that are considered undesirable or invasive because they have a woody stem or are difficult to remove from an area. Full definition
They claim that trees are replacing once open grassland over vast areas and that these «invasive woody weeds» are the real -LSB-...] (jennifermarohasy.com)
It is a foolish and costly fantasy to believe that Earth's climate can be controlled by passing laws, imposing taxes, attempting to manipulate the bodily emissions of farm animals or trying to prevent farmers from clearing woody weeds invading their pastures. (clexit.net)
Land clearing laws have seen savannah — maintained by indigenous peoples over millennia --- give way to woody weeds, feral species and declining biodiversity over vast swathes of the Australian landscape. (watertechbyrie.com)