Pierce's Disease
Research Updates

piercesdisease.cdfa.ca.gov

What is Pierce's Disease?

Pierce's Disease is a bacterial infection, which is spread by bugs that feed on grapevines, particularly the "glassy winged sharpshooter." Grapevines that become infected with PD can quickly become sick and die.

glassy-winged sharpshooter

July 2013 news archives

  • Plant killer prompts warning
    Cadtle Hills News July 29, 2013

    Plant killer prompts warning Cadtle Hills News Pierces disease — a very destructive disease of grapevine — is spread by this sap-sucking insect, the Glassy-winged sharpshooter. Fire blight is the enemy of rosebushes and apple and pear trees. It is caused by a bacteria (Erwinia amylovora) which atta ...