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Riverside County

To report firewood or trees suspected of being infested with GSOB:
Call the GSOB Hotline (951) 659-8328 or use this online form.

To request GSOB information materials and handouts:
Contact Annika Nabors: ajnabors@ucanr.edu.

GSOB has been found clustered in the Idyllwild-Pine Cove region (see zone of infestation map here). GSOB outbreaks may still occur anywhere in the county, typically moved on infested firewood. If you suspect GSOB in another region of the county, please report it using this online form.

Find a pest control professional or arborist in your area.

For more information about GSOB, see:

Cutting GSOB tree in Idyllwild_2x3x72

Photo: Marshall Smith, Staff Reporter, Idyllwild Town Crier.