California BMSB Information


Cooperative Extension Offices

State IPM Program

BMSB Researchers in California:

  • Kent Daane, University of California-Berkeley
  • Monica Cooper, UC Cooperative Extension Napa County
  • Kent Daane, UC-Berkeley
  • Mark Hoddle, UC-Riverside
  • Frank Zalom, UC-Davis

Pesticide Safety Education Program

Maps and Resources

News and Updates

August 19, 2019 Severe Brown Marmorated Stink Bug Damage in California Orchard

Last May, a Turlock, CA, almond grower noticed nearly all the nuts on a row of trees in his orchard had fallen to the ground. UCCE Integrated Pest Management advisor Jhalendra Rijal determined the cause was an infestation of brown marmorated stink bug. Source: Fruit Growers News, Aug. 19, 2019.

May 22, 2015 Look Out, Stink Bugs Are Back

In Sacramento, pests that disappeared in November are coming out of hiding, ready to start another attack. Source: Sacramento Bee, May 22, 2015.

October 24, 2014 Brown Marmorated Stink Bugs Plaguing Midtown Sacramento

These persistent bugs are threatening the Central Valley’s agricultural industry and disheartening home gardeners. Source: Sacramento Bee, Oct. 24, 2014.

March 8, 2017 Brown Marmorated Stink Bug Trapped in the Clarksburg American Viticulture Area

BMSB continues to spread slowly in California, but no damage has been reported in commercial agricultural crops. Source:, Mar. 8, 2017.