The movement of GWSS

Wines & Vines, May, 2000

The movement of GWSS (glassy-winged sharpshooter) is directly related to the movement of plant materials--on integral part of the container plant nursery industry. It will most likely be moved as egg masses or immature insects (nymphs) on ornamental plants that originate in counties that currently have breeding populations. This insect feeds on many, perhaps hundreds, of plant species and it will lay eggs in many of these plants.

Rhonda Smith, viticulture farm advisor, U.C. Cooperative Extension, in the Sonoma County viticulture newsletter for March. The GWSS is a carrier of Pierce's Disease, which is fatal to grapevines.