Impatiens’ easy-care nature, season-long bloom, and shade tolerance made it one of the most popular garden annuals. The introduction of downy mildew-resistant varieties has helped it maintain this ...

Downy mildew of impatiens is a serious disease in the United States, caused by the fungus-like Oomycete, Plasmopara obducens. Originally found in Europe, impatiens downy mildew was detected in ...

The cooler weather of fall means conditions are right for downy mildew diseases to develop. Besides the downy mildew that attacks cucumbers, which I have mentioned in previous columns, four other ...

Your description indicates that you have had downy mildew on your impatiens. Downy mildew of impatiens has been observed in the United States since about 1994 but became more widespread and ...

America's favorite bedding flower is in big trouble, and that trouble has reached the Bay Area. Common impatiens, or Impatiens walleriana, once relatively free of pests, is now contracting a disease ...

Downy mildew is the most economically important pathogen infecting lettuce Research to benefit conventional and organic farmers and reduce crop loss Research will provide consumers food grown using ...

October 2025 | Written by: Andrew Kness, M.Sc. Extension Research Assistant, Nathan Kleczewski, Ph.D. Extension Plant Pathologist, Kathryne Everts, Ph.D. Extension Vegetable Plant Pathologist Downy ...

https://doi.org/10.2307/3759397 • https://www.jstor.org/stable/3759397 Copy URL The subgenus Peronosclerospora of Sclerospora is raised to generic rank and ...

Downy mildew, caused by a range of oomycete pathogens, remains a formidable challenge in agriculture, affecting numerous crops worldwide and resulting in significant yield losses. The pathogen’s ...

Vineyards in the U.S. and Europe are testing robots for disease monitoring and treatment amid climate stress and labor ...

Mon dieu—Bordeaux vineyards are currently in deep distress. A downy mildew is affecting grapes in the region, with 90 percent of some vineyards being plagued, The Connexion reported recently. The ...

A new disease is devastating stands of red apple ice plant, Aptenia cordifolia. The attractive and previously carefree ground cover is widely planted throughout Southern California, but its popular ...