It is important to prevent any seed production as well as to control the vegetative spread. It is useful to map locations of infestations so that they can be readily located in future years. When crown vetch is blooming its many pink blossoms make it quite noticeable and easy to locate. New populations can be located and treated during blooming. Previously located populations should be treated earlier and retreated later.
Crown vetch has many characteristics that make it a tough exotic to control.
It is necessary to locate it early and start treatment early. Seedlings and resprouts can be difficult to locate in native vegetation. Thick native vegetation can make detection of small plants difficult. Prescribed burning may be useful in removing litter for detection, but later in the season some plants may go unnoticed. Failed or Ineffective Practices Prescribed burning alone has not been successful.