PACIFIC NORTHWEST NURSERY IPM

Diseases

Pest Activity Alerts on Twitter
@PNWNurseryIPM

More great Resources
 
brown rot on purple leaf plum
   

 

Back to Home

azalea leaf and flower gall
bacterial blight
boxwood blight
brown rot
Deny Disease
fig mosaic virus
forsythia stem gall
Gymnosporangium rust on serviceberry new
Gymnosporangium rust on Quince
impatiens downy mildew
Pacific Coast pear rust
powdery mildew
Ralstonia Alert
Phytophthora ramorum
Rhododendron bud blight
smut on Trillium
white rust on alyssum
Contact Us

Brown Rot on Prunus and Callery Pear

More information on the fungal disease that causes brown rot can be found at the Online Guide to Plant Disease.

On Ornamental plum

On callery type pears, flowers are not infected as frequently as the leaves. In Prunus, infected flower parts turn light brown and may develop areas of buff-colored (M. fructicola) or gray (M. laxa) spores. Infected petals may look water soaked, which can be mistaken for frost injury. Flowers generally collapse as the fungus invades through the pedicel. Infected flowers often adhere to twigs and spurs through harvest or even winter.

Brown rot infection of cherry blossom
brown rot infection of cherry blossom
Photo: Rosetta
Brown rot infection of cherry blossom and leaves
brown rot on cherry blossom and leaves
Photo: Rosetta
Brown rot infection of cherry leaves
brown rot infection of cherry leaves
Photo: Rosetta
Brown rot infection of quince blossom
brown rot on quince blossom
Photo: Rosetta
 
Brown rot on callery pear
Callery pear brown rot
Photo: Melodie Putnam
Sporulation of brown rot on callery pear
Callery pear brown rot sporulation
Photo: Melodie Putnam
Website editor:
Robin Rosetta
Page last modified 5/1/09
 

Before applying any of the information found on this site, please read our disclaimer.
Copyright © 2017, All Rights Reserved