There have been issues with fires which have raged out of control in the past, such as the Summer of Fire in 1988 which burned out of control from June 14 to September 23.
Osat ("Cirsium vulgare"), Common Mullein ("Verbascum thapsus") in plevel Klamath ("Hypericum perforatum"), so opredeljene kot škodljive od leta 1940.