About the pest

  • a bacterium that lives in the water conducting vessels (xylem) of plants
  • plants show symptoms of water stress, such as leaf scorch, and the plant progressively weakens and dies
  • can be transmitted in infected propagation material and by leafhoppers such as the exotic glassy-winged sharpshooter
  • present in North America, Central America and some regions of South America. It is present in a restricted range in Italy, Iran and Taiwan, and is under eradication in some other countries in Europe. View a world distribution map.
  • the diseases caused by Xylella fastidiosa go by a range of names depending on the host species, including: Pierce’s disease, almond leaf scorch, bacterial leaf scorch, citrus variegated chlorosis, olive quick decline and olive leaf scorch.

More information

Xylella fastidiosa (Department of Agriculture)

Xylella fastidiosa (Plant Health Australia)