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Impatiens Downy Mildew

N. A. Peres and L. A. Warner

Release Date: 11/8/2020

Reviewed At: 5/30/2024

DOI: 10.32473/edis-pp309-2013

Agriculture

Abstract

Downy mildew on impatiens is of great concern throughout Florida. Winters in south Florida provide high humidity paired with cool nights, creating ideal conditions for disease development. Downy mildews are caused by several different species of pathogens that tend to be plant-host specific. Plasmopara obducens is the pathogen that affects impatiens. Some literature indicates that nighttime temperatures of about 50°F to 72°F favor downy mildew, but the disease has been reported on impatiens year-round in south Florida.

About this Publication

This document is PP309, one of a series of the Plant Pathology Department, UF/IFAS Extension. Original publication date September 2013. Revised May 2020. Visit the EDIS website at https://edis.ifas.ufl.edu for the currently supported version of this publication.

About the Authors

N. A. Peres, professor, Plant Pathology Department, UF/IFAS Gulf Coast Research and Education Center; L. A. Warner, assistant professor, social marketing and program evaluation, Department of Agricultural Education and Communication; UF/IFAS Extension, Gainesville, FL 32611.

How to Cite

Warner, L., Schall, B., Palmateer, A. J., & Peres, N. A. (2014). Impatiens Downy Mildew. EDIS, 2014(1). https://doi.org/10.32473/edis-pp309-2013

Authors

Natalia Peres
Natalia Peres
Contact
Specialist
University of Florida

professor, strawberry pathology, Department of Plant Pathology, UF/IFAS Gulf Coast Research and Education Center, Wimauma, FL

View Natalia Peres's Profile
L. Warner
L. Warner
Specialist
University of Florida

professor and Extension specialist, program evaluation and social marketing, Department of Agricultural Education and Communication, and UF/IFAS Center for Land Use Efficiency, Gainesville, FL

View L. Warner's Profile

Publication #PP309

Impatiens walleriana

Disclaimers

The use of trade names in this publication is solely for the purpose of providing specific information. UF/IFAS does not guarantee or warranty the products named, and references to them in this publication do not signify our approval to the exclusion of other products of suitable composition.