Downy Milldew on Impatiens
Impatiens Downy Mildew: Guidelines for Landscaper, Ball®
http://www.ballhort.com/Landscapers/tips.aspx?articleid=16#article
Impatiens Downy Mildew: Guidelines for Growers, Ball®
www.ballhort.com/pdf/ImpatiensDownyMildewGrowerGuidelines.pdf