Handy illustration of common plant diseases and example photographs from the University of Florida.

Handy illustration of common plant diseases and example photographs from the University of Florida.

The experts at HGTVGardens.com share the most common plant diseases and disorders and how to prevent and treat them.

Common Plant Diseases

The experts at HGTVGardens.com share the most common plant diseases and disorders and how to prevent and treat them.

Charmingly warm weather coaxed roses into bloom early this year, which means dealing with the usual diseases and pests earlier, too. When it comes to one of the county's most popular perennial plants, the "big four" vexations are powdery mildew, black spot, rust and aphids, according to Jay W. Pscheidt, a plant pathology specialist with Oregon State University's Extension Service.

Charmingly warm weather coaxed roses into bloom early this year, which means dealing with the usual diseases and pests earlier, too. When it comes to one of the county's most popular perennial plants, the "big four" vexations are powdery mildew, black spot, rust and aphids, according to Jay W. Pscheidt, a plant pathology specialist with Oregon State University's Extension Service.

Brian Hudelson, UW-Madison Plant Pathology  Revised:  8/13/2012  Item number:  XHT1005a  What is powdery mildew?  Powdery mildew is a disease that occurs on

Brian Hudelson, UW-Madison Plant Pathology Revised: 8/13/2012 Item number: XHT1005a What is powdery mildew? Powdery mildew is a disease that occurs on

Ann Joy and Brian Hudelson, UW-Madison Plant Pathology  Revised:  5/7/2010  Item number:  XHT1017  What is black walnut toxicity? Black walnut trees (Juglans

Ann Joy and Brian Hudelson, UW-Madison Plant Pathology Revised: 5/7/2010 Item number: XHT1017 What is black walnut toxicity? Black walnut trees (Juglans

Best shade-loving plants!  Flowering shade perennials, come back year after year, and are maintenance free!!

Best shade plants! Flowering shade perennials, year after year, easy..

Best shade-loving plants! Flowering shade perennials, come back year after year, and are maintenance free!!

Control Practices for Canada Thistle, Botany & Plant Pathology, Purdue U.Roots for thistle weeds

Control Practices for Canada Thistle, Botany & Plant Pathology, Purdue U.Roots for thistle weeds

Lecture: Artist Fred Wilson: Museum Therapist  Fred Wilson will share his experiences as an artist and self-described "museum therapist" who inspires and challenges museums to be more aware of the stories they tell. Presented in collaboration with the Marianna Kistler Beach Museum of Art, Department of Art and K-State Libraries in support of the Museum of Wonder exhibition. Funded by the KSU SGA Fine Arts Fee.  March 28, 2013 - 6:00pm to 7:00pm 114 Willard Hall; Kansas State University

Lecture: Artist Fred Wilson: Museum Therapist Fred Wilson will share his experiences as an artist and self-described "museum therapist" who inspires and challenges museums to be more aware of the stories they tell. Presented in collaboration with the Marianna Kistler Beach Museum of Art, Department of Art and K-State Libraries in support of the Museum of Wonder exhibition. Funded by the KSU SGA Fine Arts Fee. March 28, 2013 - 6:00pm to 7:00pm 114 Willard Hall; Kansas State University

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