Pacific Northwest Plant Disease Management Handbook

Quince (Cydonia oblonga)-Brown Rot Blossom Blight

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Latest revision: 
March 2024

Closeup on flowers that have died back but not fallen off. Sporulation of the fungus can be seen as a gray cast to the dead flower parts.

Jay W, Pscheidt, 2008.

Image related to Quince-Brown Rot Blossom Blight

Blossom blight occurs during bloom when temperatures during rainfall are over 50F.

Jay W. Pscheidt, 2012

See:

Cherry (Prunus spp.) - Brown Rot Blossom Blight and Fruit Rot

Pear (Pyrus spp.) - Fire Blight

Note The early symptoms of brown rot blossom blight on quince could be mistaken for fire blight.

Pscheidt, J.W., and Ocamb, C.M. (Senior Eds.). 2024 Pacific Northwest Plant Disease Management Handbook.
© Oregon State University.

Use pesticides safely!

  • Wear protective clothing and safety devices as recommended on the label. Bathe or shower after each use.
  • Read the pesticide label—even if you’ve used the pesticide before. Follow closely the instructions on the label (and any other directions you have).
  • Be cautious when you apply pesticides. Know your legal responsibility as a pesticide applicator. You may be liable for injury or damage resulting from pesticide use.

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H - Home garden packaging commonly available.     O - Acceptable in organic production.