Downy Mildew On Impatiens: Resources And Advice

Closeup shot of downy mildew on an impatiens leaf. Downy mildew has been decimating landscapes full of impatiens in South Florida this year. Photo courtesy of Aaron J. Palmateer, assistant professor and extension specialist at the University of Florida. Photo courtesy of Aaron J. Palmateer, assistant professor and extension specialist at the University of Florida.

Impatiens Downy Mildew Found In Ohio
April 16, 2013 | The Ohio State University Extension encourages growers to begin preventative treatment now.

Everything You Need To Know About Impatiens Downy Mildew
Dec. 6, 2012 | Ball Horticultural Company gives growers quick facts about the disease plaguing the country’s most popular bedding plant.

How To Grow SunPatiens
Dec. 6, 2012 | This disease-resistant alternative to Impatiens walleriana from Sakata Ornamentals gives consumers a comparable, colorful option for their gardens and landscapes.

Growers Look To Limit Downy Mildew Losses
Dec. 6, 2012 | Thirty-three states were affected by impatiens downy mildew in 2012. Growers are being proactive to limit financial and plant losses in 2013.

Ball’s Mike Klopmeyer On What To Do In 2013 About Impatiens Downy Mildew
How much of an affect will impatiens downy mildew have in 2013? Get an update on the spread of this disease and recommendations for your 2013 crops from Ball Horticultural’s Mike Klopmeyer.

Ball’s Guidelines For Growers
Background on the disease and Ball’s recommendations for chemical and cultural control. 

7 Tips For Protecting Impatiens From Downy Mildew
To prepare for the disease that was spotted on walleriana species late last year, growers must practice clean production, scout vigilantly and apply fungicides regularly.

FloriCAST: Downy Mildew On Impatiens
Take a look back at previous outbreaks of downy mildew in the landscape and how the disease manifested itself this year.

Your Impatiens Might Have Downy Mildew If …
Use this checklist as a starting point to scout for the disease rather than scramble for solutions to it.

How To Overcome Downy Mildew Spread On Impatiens
Cooler and wetter-than-normal conditions in the Northeast late this summer are causing landscapers problems with Impatiens walleriana.

BASF’s Kathie E. Kalmowitz On Downy Mildew
Control downy mildew on impatiens with fungicides that offer extended protection and by communicating the crop’s landscape needs with your customers.

Impatiens Downy Mildew–Background, Biology and Treatment  
Information regarding background, symptoms, cultural best practices and prevention tips for impatiens downy mildew. Contributed by Brian E. Corr, Dean Mosdell, Nancy Rechcigl, Darryl L. Thomas and Jane Trolinger of Syngenta.

A Practical Approach For Landscape Gardeners    
The signs, symptoms and responses to downy mildew in the landscape.

Bedding Impatiens Landscape Substitutions    
Take a look at possible substitutes from Syngenta Flowers for Impatiens walleriana by region. 

Impatiens Disease Prevention Schedule  
Syngenta has developed the following disease control program based on the experience of researchers in the United States and Europe. Guideslines for 4-inch, 6-inch or larger containers.

Download the following from the American Floral Endowment website:

Illustrations of symptoms in production and landscape
Fact Sheet
Impatiens Downy Mildew Grower Guidelines
Preventive and responsive chemical control programs
A list of fungicides labeled for downy mildew control
FAQs for landscapers
Impatiens Downy Mildew in the Landscape
Assessing RiskTips for Protecting Impatiens from Downy Mildew
A Practical Approach for Landscaper Gardeners
Disease Prevention Schedule
Impatiens Downy Mildew landscape substitutions
Impatiens Downy Mildew Presentation
Managing Downy Mildew of Impatiens PPT


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