California Pest Rating for Puccinia psidii G. Winter (Myrtle Rust) Pest Rating: C PEST RATING PROFILE Initiating Event: A review of the current pest rating of Myrtle Rust has been requested by certain counties due to the increased detection of the pathogen within California.  Currently, Puccinia psidii has a B rating. History & Status: Background:  … Continue reading Myrtle Rust: Puccinia psidii G. Winter →