woolly alder aphid

Woolly Alder Aphids

Woolly Alder Aphids (Prociphilus tessellatus, family Aphididae) produce large, white fluffy colonies on the branches of their namesake host (Alnus spp.). Their appearance has been variously described as looking like white pom-poms, cotton candy, or white hair covering alder branches.
Published on
Authors
Joe Boggs
Jim Chatfield

Cedar Quince Rust Rages

  Christmas In July: Some hawthorns these past two weeks are sporting little orange sherbet-colored aecial spore masses of the cedar quince rust fungus (Gymnosporangium clavipes), pushing out from the haws. I am receiving many calls about this and, Frits Rizor, the Executive Director of the Ohio Nursery and Landscape Association, even sent me a text and image the other day – we are all plant pathologists!

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Published on
Authors
Jim Chatfield