See All Pest, Disease and Weed Identification

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Plant Disease resistant varieties like this PrairiFire Crabapple, which is also resistant to scab, rust and mildew. Photo by K Salisbury, Taken at the Almshouse Arboretum of Bucks County Extension Doylestown PA
Fire Blight in the Ornamental Landscape - Articles Articles
This disease, caused by Erwinia amylovora attacks more than 75 species of trees and shrubs. More
Fire blighted flowers. Photo: Gary Moorman
Fire Blight in Ornamentals - Articles Articles
Fire blight is a disease caused by the bacterium Erwinia amylovora. More
Protect tart cherries during bloom to prevent cherry leaf spot infection.
Tree Fruit Diseases To Manage During The Month of May - Articles Articles
May is the battleground month for disease management: be on alert for apple scab, fire blight, powdery mildew, rust, cherry leaf spot, brown rot, and bacterial spot infection conditions. More
Fire Blight of Pear
Fire Blight of Pear - Articles Articles
Fire blight is the most serious pear disease in the eastern United States. Caused by the bacterium Erwinia amylovora, the disease can attack some 75 species of plants of the rose family. More
Fighting Fire Blight During Winter: Canker Management
Fighting Fire Blight During Winter: Canker Management - Articles Articles
When it comes to managing fire blight, the first line of defense is good sanitation, which is removing the overwintering source for the bacteria: cankers. More
Source: Steve L. Brown, University of Georgia, Bugwood.org
Potato Leafhopper - Articles Articles

Potato Leafhopper

Dennis Calvin

Potato leafhopper, Empoasca fabae, is a migratory pest of many crops. It feeds on leaves of rapidly growing apple terminals and may aid in spread of fire blight. More
John Hartman, University of Kentucky, Bugwood.org
Home Orchards: Fire Blight Management in Apples and Pears - Articles Articles
Temperatures just before and during bloom will determine if fire blight becomes serious in early spring. More
Penn State Department of Plant Pathology & Environmental Microbiology Archives, Penn State, Bugwood.org
Fire Blight in Home Orchards - Articles Articles
Fire blight overwinters in cankers on branches and trunks. When the temperature reaches about 65°F, bacteria begin to multiply and appear on the outsides of the cankers as clear amber ooze. More
Penn State Department of Plant Pathology & Environmental Microbiology Archives, Penn State, Bugwood.org
Fire Blight in Home Apple and Pear Orchards - Articles Articles
Fire blight is destructive to apple and quince trees and is the most serious pear disease in the eastern United States. More
A characteristic symptom of shoot blight is the bending of terminal growth into the shape of a shepherd’s crook. Photo by K. Peter.
Fire Blight of Apple - Articles Articles

Fire Blight of Apple

Kari A. Peter, Ph.D.

Fire blight is destructive to apples and quince and is the most serious pear disease in the eastern United States. More
Home Garden: Fire Blight
Home Garden: Fire Blight - Articles Articles
Fire blight is a disease caused by the bacterium Erwinia amylovora. More