Thomas Dudek, senior district extension horticulture and marketing educator, says in a recent email that he has received information on a number of cases confirming downy mildew has infected bedding impatiens in landscapes across the greater West Michigan area. Because downy mildew develops an oospore stage, these locations will no longer be able to grow bedding or double impatiens for many years.
Dudek says retailers should be looking at increasing consumer awareness about plant alternatives to impatiens, such as Sun Patiens or New Guineas, which are not affected by this disease. An article by the Michigan State University offers more alternatives.
Be sure to check your impatiens and look for the symptoms of downy mildew. Click here to learn more on preventing and managing the disease.
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