Fire blight

Fire blight is a very contagious plant disease.

Also known as:

recognize fire blight in apples, pears
Fire blight (pear), photo: Ninjatacoshell - CC BY-SA 3.0

Fire blight (Erwinia amylovora). Infectious plant disease and a threat to fruit production. Warm, sweltering weather can trigger an epidemic. Plants and trees of the rose family (Rosaceae) are susceptible. The disease is spread by wind, rain, bees, birds and insects.

Affected plants

  • Pear tree
  • Hawthorn
  • Apple
  • Rowan
  • Firethorn
  • Photinia
  • Cotoneaster


Once infested, pruning away the diseased parts is necessary. Affected parts should be destroyed (burned). Disinfect tools (alcohol).


Remove affected areas as soon as possible, work with clean disinfected material (alcohol) and destroy affected parts.