Ornamentals Hotline Issue 20

Bacterial leaf scorch on red oak.  Photo credit: Nancy Gregory
Bacterial leaf scorch on red oak. Photo credit: Nancy Gregory
Juniper scale adults.   Photo credit: US National Collection of Scale Insects Photographs Archive, USDAARS, bugwood.org
Juniper scale adults. Photo credit: US National Collection of Scale Insects Photographs Archive, USDAARS, bugwood.org
Downy mildew on Rudbeckia lower leaf surface.  Photo credit: Nancy Gregory
Downy mildew on Rudbeckia lower leaf surface. Photo credit: Nancy Gregory
White prunicola scale.  Photo credit: Brian Kunkel
White prunicola scale. Photo credit: Brian Kunkel
Japanese maple scale. Photo credit: Brian Kunkel
Japanese maple scale. Photo credit: Brian Kunkel

Barton, Susan

Associate professor in Landscape Horticulture, Plant and Soil Sciences, U of D
Cooperative Extension Specialist, Landscape Horticulture
Research in sustainable landscaping, roadside vegetation

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