Cedar-hawthorne rust

By Rudy Mancke

Published June 14, 2023 at 5:29 AM EDT

The cedar-hawthorn rust is common all across the Midwest and Eastern United States. Its overwintering capability allows it to thrive in seasonal climates with harsh winters. The pathogen that causes it, Gymnosporangium globosum, prefers humid and cloudy conditions for developing growth and the spores depend on rain and wind to be dispersed to its alternate host.

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Rudy Mancke

Rudy Mancke served as naturalist and co-host of South Carolina ETV's <i>NatureScene</i>, which began its long run in 1978. His field trips, broadcast nationwide, earned him a legion of dedicated viewers. Rudy's knowledge of the complex inner-workings of different ecosystems and his great admiration for the natural world make him the perfect guide. In fact, the National Wildlife Federation and the Garden Club of America honored his commitment to resource conservation with special awards. After retiring from SCETV, Rudy went on to become naturalist-in-residence at the University of South Carolina, Columbia. He hosted SC Public Radio's <i>NatureNotes</i> from 1999 until his death in 2023 at age 78.

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