Pest & Disease Alert - Fireblight (Erwinia amylovora)

Four separate outbreaks of Erwinia amylovora have occurred on Cotoneaster plants since late August according to data from the Food and Environment Research Agency (Fera).

Erwinia amylovora, or Fireblight was discovered in Somerset, Lincolnshire and twice in Cambridgeshire where plants were treated.

However in another incident in Cambridgeshire Cydonia, Crateaegus and Cotoneaster plants were destroyed to contain the outbreak.

Fireblight, which is caused by the bacterium Erwinia amylovora commonly affects apples, pears and related trees and shrubs in the family Rosaceae, sub-family Maloideae (Pome fruits).

Hosts include Amelanchier (June Berry), Chaenomeles (Flowering Quince), Cotoneaster (Cotoneaster), Crataegus (Hawthorn), Cydonia (Quince), Eriobotrya (Loquat), Malus (Apple), Mespilus (Medlar), Photinia, Pyracantha (Firethorn), Pyrus (Pear) and Sorbus (Mountain Ash).

For more information on symptoms and treatments, see Fera's Fireblight Factsheet here.

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