[header] How to get rid of a wild rose bush [title] Choose an appropriate weed killer. [step] Chemical weed killers containing glyphosate are an easy way to kill unwanted wild rose, but you do need to be very careful not to let it impact the plants that you don't want to remove. [substeps] Some chemical weed killers will linger in the soil so chose your weed killer carefully if you want to replant in the area soon after. 
Also make sure you choose a weed killer effective for use on woody plants. [title] Get rid of wild rose bushes in late summer, if possible.