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Orange "Dust" from Callery Pears

Rust spores on sidewalk
Rust spores on sidewalk

Homeowners in southwest Ohio were surprised yesterday to awake to find sidewalks, cars, and streets beneath Callery pears (Pyrus calleryana) covered in a fine sprinkling of orange dust. The unusual event spawned rampant speculation on social media and captured the attention of the local news media. 

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