Michigan pathologist alerts growers to downy mildew on impatiens

Posted by Denise Ellsworth Wednesday, 12 October 2011 08:17

Clean downy mildew up now so it won’t stay this winter.

Published October 12, 2011
Mary K. Hausbeck, Michigan State University Extension, Department of Plant Pathology
Downy mildew on impatiens is causing problems in some U.S.landscapes this fall. Downy mildew is a pathogen of both vegetative andseed-produced Impatiens walleriana (thegarden impatiens) throughout the world and has been reported in the UnitedStates, Canada, Asia, Europe and India. In the United States, downy mildew on Impatiens walleriana was first reportedin 1942. Since that time, downy mildew on Impatienswalleriana has occurred sporadically throughout the United States. 
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Denise Ellsworth is a horticultural educator with Ohio State University Extension. If you have questions about caring for your garden, call the Master Gardener hot line from 9 a.m. to noon Tuesdays at 330-928-GROW or write: Horticulture Educator, Summit County, 2525 State Road, Suite 250, Cuyahoga Falls, OH 44223. Include your phone number. E-mail questions to mgsummit@ag.ohio-state.edu.

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