California Pest Rating for English Ivy, Irish Ivy & Algerian Ivy | Hedera spp. Pest Rating: None PEST RATING PROFILE Initiating Event: This plant is subject to a petition to the Secretary to list English ivy (Hedera helix) as a noxious weed. History & Status: True ivies (Hedera spp.) are vining, evergreen plants with dark, … Continue reading English Ivy, Irish Ivy & Algerian Ivy | Hedera spp.
California Pest Rating for Septoria protearum Viljoen & Crous 1998 Pest Rating: B PEST RATING PROFILE Initiating Event: On March 29, 2017, lavender (Lavendula sp.) plants showing symptoms of leaf spots were detected in a nursery in San Luis Obispo County by County Agricultural officials. A sample of diseased leaves was sent to the CDFA … Continue reading Septoria protearum Viljoen & Crous 1998
California Pest Rating for Planococcus minor (Maskell): Pacific Mealybug Hemiptera: Pseudococcidae Pest Rating: A PEST RATING PROFILE Initiating Event: Planococcus minor is frequently intercepted by CDFA and is presently assigned a temporary rating of “Q”. A pest rating proposal is required to assign a permanent pest rating. History & Status: Background: Planococcus minor is a … Continue reading Planococcus minor (Maskell): Pacific Mealybug
California Pest Rating for Phytophthora niederhauserii Abad & J. Abad, 2014 Pest Rating: B PEST RATING PROFILE Initiating Event: None. A permanent rating for Phytophthora niederhauserii is proposed herein. History & Status: Background: In 2003, Abad and Abad reported the discovery of a Phytophthora species associated with necrotic collars, stems and roots of arborvitae … Continue reading Phytophthora niederhauserii Abad & J. Abad, 2014
California Pest Rating for Pseudaulacaspis cockerelli (Cooley): Magnolia White Scale Hemiptera: Diaspididae Pest Rating: A PEST RATING PROFILE Initiating Event: Pseudaulacaspis cockerelli is frequently intercepted by CDFA and requires a pest rating proposal to support its pest rating. History & Status: Background: Pseudaulacaspis cockerelli is a highly polyphagous armored scale insect that is a pest of … Continue reading Pseudaulacaspis cockerelli (Cooley): Magnolia White Scale
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