Game Commission biologist Art McMorris has spent 18 years working on behalf of the winged predators.
The Japanese Barberry may look pretty but ticks that spread Lyme disease love living in them.
The staffing situation means delays in clearing roads will be likely this winter.
The changes could cost another $120 million a year but significantly reduce health risks, supporters say.
Some insects like mosquitos are thriving later in the season as temperatures reach well into the 70s.